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Finding the Fourth Proportional to 424,874.94, 637,309.57 and 172,151.70

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Solution

The fourth proportional to 424,874.94, 637,309.57 and 172,151.70 is: 258,226.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,874.94 : 637,309.57 = 172,151.70 : x
  2. Step 2: Convert to fraction form
    424,874.94/637,309.57 = 172,151.70/x
  3. Step 3: Cross multiply
    424,874.94x = 637,309.57 × 172,151.70
  4. Step 4: Simplify right side
    424,874.94x = 109,713,925,471.39
  5. Step 5: Solve for x
    x = 109,713,925,471.39/424,874.94
  6. Step 6: Final answer
    x = 258,226.40

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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.