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Finding the Fourth Proportional to 383,504.61, 529,254.38 and 213,739.95

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Solution

The fourth proportional to 383,504.61, 529,254.38 and 213,739.95 is: 294,971.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,504.61 : 529,254.38 = 213,739.95 : x
  2. Step 2: Convert to fraction form
    383,504.61/529,254.38 = 213,739.95/x
  3. Step 3: Cross multiply
    383,504.61x = 529,254.38 × 213,739.95
  4. Step 4: Simplify right side
    383,504.61x = 113,122,803,649.78
  5. Step 5: Solve for x
    x = 113,122,803,649.78/383,504.61
  6. Step 6: Final answer
    x = 294,971.17

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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.