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Finding the Fourth Proportional to 429,337.77, 644,008.88 and 251,720.23

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Solution

The fourth proportional to 429,337.77, 644,008.88 and 251,720.23 is: 377,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,337.77 : 644,008.88 = 251,720.23 : x
  2. Step 2: Convert to fraction form
    429,337.77/644,008.88 = 251,720.23/x
  3. Step 3: Cross multiply
    429,337.77x = 644,008.88 × 251,720.23
  4. Step 4: Simplify right side
    429,337.77x = 162,110,062,414.92
  5. Step 5: Solve for x
    x = 162,110,062,414.92/429,337.77
  6. Step 6: Final answer
    x = 377,581.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.