Home / 421,402,488,677.55-581,435,762,937.07-238,499,590,254.21

Finding the Fourth Proportional to 421,402,488,677.55, 581,435,762,937.07 and 238,499,590,254.21

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Solution

The fourth proportional to 421,402,488,677.55, 581,435,762,937.07 and 238,499,590,254.21 is: 329,073,023,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,402,488,677.55 : 581,435,762,937.07 = 238,499,590,254.21 : x
  2. Step 2: Convert to fraction form
    421,402,488,677.55/581,435,762,937.07 = 238,499,590,254.21/x
  3. Step 3: Cross multiply
    421,402,488,677.55x = 581,435,762,937.07 × 238,499,590,254.21
  4. Step 4: Simplify right side
    421,402,488,677.55x = 138,672,191,219,635,150,913,536
  5. Step 5: Solve for x
    x = 138,672,191,219,635,150,913,536/421,402,488,677.55
  6. Step 6: Final answer
    x = 329,073,023,879.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.