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Finding the Fourth Proportional to 424,757.06, 636,840.34 and 187,970.58

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Solution

The fourth proportional to 424,757.06, 636,840.34 and 187,970.58 is: 281,825.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,757.06 : 636,840.34 = 187,970.58 : x
  2. Step 2: Convert to fraction form
    424,757.06/636,840.34 = 187,970.58/x
  3. Step 3: Cross multiply
    424,757.06x = 636,840.34 × 187,970.58
  4. Step 4: Simplify right side
    424,757.06x = 119,707,248,077.20
  5. Step 5: Solve for x
    x = 119,707,248,077.20/424,757.06
  6. Step 6: Final answer
    x = 281,825.21

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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.