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Finding the Fourth Proportional to 280,116.30, 420,174.45 and 93,127.80

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Solution

The fourth proportional to 280,116.30, 420,174.45 and 93,127.80 is: 139,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,116.30 : 420,174.45 = 93,127.80 : x
  2. Step 2: Convert to fraction form
    280,116.30/420,174.45 = 93,127.80/x
  3. Step 3: Cross multiply
    280,116.30x = 420,174.45 × 93,127.80
  4. Step 4: Simplify right side
    280,116.30x = 39,129,922,144.71
  5. Step 5: Solve for x
    x = 39,129,922,144.71/280,116.30
  6. Step 6: Final answer
    x = 139,691.70

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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.