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Finding the Fourth Proportional to 610,725.90, 915,651.45 and 255,557.10

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Solution

The fourth proportional to 610,725.90, 915,651.45 and 255,557.10 is: 383,152.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,725.90 : 915,651.45 = 255,557.10 : x
  2. Step 2: Convert to fraction form
    610,725.90/915,651.45 = 255,557.10/x
  3. Step 3: Cross multiply
    610,725.90x = 915,651.45 × 255,557.10
  4. Step 4: Simplify right side
    610,725.90x = 234,001,229,172.80
  5. Step 5: Solve for x
    x = 234,001,229,172.80/610,725.90
  6. Step 6: Final answer
    x = 383,152.62

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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.