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Finding the Fourth Proportional to 373,465.42, 515,379.85 and 212,320.51

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Solution

The fourth proportional to 373,465.42, 515,379.85 and 212,320.51 is: 293,000.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,465.42 : 515,379.85 = 212,320.51 : x
  2. Step 2: Convert to fraction form
    373,465.42/515,379.85 = 212,320.51/x
  3. Step 3: Cross multiply
    373,465.42x = 515,379.85 × 212,320.51
  4. Step 4: Simplify right side
    373,465.42x = 109,425,710,776.47
  5. Step 5: Solve for x
    x = 109,425,710,776.47/373,465.42
  6. Step 6: Final answer
    x = 293,000.92

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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.