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Finding the Fourth Proportional to 426,136.96, 639,039.32 and 159,752.13

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Solution

The fourth proportional to 426,136.96, 639,039.32 and 159,752.13 is: 239,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,136.96 : 639,039.32 = 159,752.13 : x
  2. Step 2: Convert to fraction form
    426,136.96/639,039.32 = 159,752.13/x
  3. Step 3: Cross multiply
    426,136.96x = 639,039.32 × 159,752.13
  4. Step 4: Simplify right side
    426,136.96x = 102,087,892,523.75
  5. Step 5: Solve for x
    x = 102,087,892,523.75/426,136.96
  6. Step 6: Final answer
    x = 239,565.92

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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.