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Finding the Fourth Proportional to 424,652.65, 636,782.11 and 158,341.66

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Solution

The fourth proportional to 424,652.65, 636,782.11 and 158,341.66 is: 237,439.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,652.65 : 636,782.11 = 158,341.66 : x
  2. Step 2: Convert to fraction form
    424,652.65/636,782.11 = 158,341.66/x
  3. Step 3: Cross multiply
    424,652.65x = 636,782.11 × 158,341.66
  4. Step 4: Simplify right side
    424,652.65x = 100,829,134,367.89
  5. Step 5: Solve for x
    x = 100,829,134,367.89/424,652.65
  6. Step 6: Final answer
    x = 237,439.08

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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.