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Finding the Fourth Proportional to 484,085.80, 726,128.70 and 307,376.20

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Solution

The fourth proportional to 484,085.80, 726,128.70 and 307,376.20 is: 461,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,085.80 : 726,128.70 = 307,376.20 : x
  2. Step 2: Convert to fraction form
    484,085.80/726,128.70 = 307,376.20/x
  3. Step 3: Cross multiply
    484,085.80x = 726,128.70 × 307,376.20
  4. Step 4: Simplify right side
    484,085.80x = 223,194,680,516.94
  5. Step 5: Solve for x
    x = 223,194,680,516.94/484,085.80
  6. Step 6: Final answer
    x = 461,064.30

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Similar ratio
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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.