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Finding the Fourth Proportional to 426,136.59, 639,038.76 and 159,751.75

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Solution

The fourth proportional to 426,136.59, 639,038.76 and 159,751.75 is: 239,565.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,136.59 : 639,038.76 = 159,751.75 : x
  2. Step 2: Convert to fraction form
    426,136.59/639,038.76 = 159,751.75/x
  3. Step 3: Cross multiply
    426,136.59x = 639,038.76 × 159,751.75
  4. Step 4: Simplify right side
    426,136.59x = 102,087,560,227.83
  5. Step 5: Solve for x
    x = 102,087,560,227.83/426,136.59
  6. Step 6: Final answer
    x = 239,565.35

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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.