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Finding the Fourth Proportional to 424,621.68, 636,916 and 158,381.68

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Solution

The fourth proportional to 424,621.68, 636,916 and 158,381.68 is: 237,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,621.68 : 636,916 = 158,381.68 : x
  2. Step 2: Convert to fraction form
    424,621.68/636,916 = 158,381.68/x
  3. Step 3: Cross multiply
    424,621.68x = 636,916 × 158,381.68
  4. Step 4: Simplify right side
    424,621.68x = 100,875,826,098.88
  5. Step 5: Solve for x
    x = 100,875,826,098.88/424,621.68
  6. Step 6: Final answer
    x = 237,566.36

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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.