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Finding the Fourth Proportional to 377,272.72, 520,627.80 and 207,503.20

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Solution

The fourth proportional to 377,272.72, 520,627.80 and 207,503.20 is: 286,349.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,272.72 : 520,627.80 = 207,503.20 : x
  2. Step 2: Convert to fraction form
    377,272.72/520,627.80 = 207,503.20/x
  3. Step 3: Cross multiply
    377,272.72x = 520,627.80 × 207,503.20
  4. Step 4: Simplify right side
    377,272.72x = 108,031,934,508.96
  5. Step 5: Solve for x
    x = 108,031,934,508.96/377,272.72
  6. Step 6: Final answer
    x = 286,349.71

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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.