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Finding the Fourth Proportional to 423,149.10, 634,319.10 and 156,838.20

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Solution

The fourth proportional to 423,149.10, 634,319.10 and 156,838.20 is: 235,107.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,149.10 : 634,319.10 = 156,838.20 : x
  2. Step 2: Convert to fraction form
    423,149.10/634,319.10 = 156,838.20/x
  3. Step 3: Cross multiply
    423,149.10x = 634,319.10 × 156,838.20
  4. Step 4: Simplify right side
    423,149.10x = 99,485,465,869.62
  5. Step 5: Solve for x
    x = 99,485,465,869.62/423,149.10
  6. Step 6: Final answer
    x = 235,107.36

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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.