Home / 317,748.75-438,491.58-172,553.28

Finding the Fourth Proportional to 317,748.75, 438,491.58 and 172,553.28

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Solution

The fourth proportional to 317,748.75, 438,491.58 and 172,553.28 is: 238,122.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,748.75 : 438,491.58 = 172,553.28 : x
  2. Step 2: Convert to fraction form
    317,748.75/438,491.58 = 172,553.28/x
  3. Step 3: Cross multiply
    317,748.75x = 438,491.58 × 172,553.28
  4. Step 4: Simplify right side
    317,748.75x = 75,663,160,381.38
  5. Step 5: Solve for x
    x = 75,663,160,381.38/317,748.75
  6. Step 6: Final answer
    x = 238,122.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.