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Finding the Fourth Proportional to 424,663.68, 637,017.84 and 109,122.72

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Solution

The fourth proportional to 424,663.68, 637,017.84 and 109,122.72 is: 163,689.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,663.68 : 637,017.84 = 109,122.72 : x
  2. Step 2: Convert to fraction form
    424,663.68/637,017.84 = 109,122.72/x
  3. Step 3: Cross multiply
    424,663.68x = 637,017.84 × 109,122.72
  4. Step 4: Simplify right side
    424,663.68x = 69,513,119,389.32
  5. Step 5: Solve for x
    x = 69,513,119,389.32/424,663.68
  6. Step 6: Final answer
    x = 163,689.82

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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.