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Finding the Fourth Proportional to 610,872.56, 915,373.52 and 255,693.20

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Solution

The fourth proportional to 610,872.56, 915,373.52 and 255,693.20 is: 383,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,872.56 : 915,373.52 = 255,693.20 : x
  2. Step 2: Convert to fraction form
    610,872.56/915,373.52 = 255,693.20/x
  3. Step 3: Cross multiply
    610,872.56x = 915,373.52 × 255,693.20
  4. Step 4: Simplify right side
    610,872.56x = 234,054,784,524.06
  5. Step 5: Solve for x
    x = 234,054,784,524.06/610,872.56
  6. Step 6: Final answer
    x = 383,148.30

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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.