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Finding the Fourth Proportional to 391,121.92, 586,588.92 and 180,557.56

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Solution

The fourth proportional to 391,121.92, 586,588.92 and 180,557.56 is: 270,792.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,121.92 : 586,588.92 = 180,557.56 : x
  2. Step 2: Convert to fraction form
    391,121.92/586,588.92 = 180,557.56/x
  3. Step 3: Cross multiply
    391,121.92x = 586,588.92 × 180,557.56
  4. Step 4: Simplify right side
    391,121.92x = 105,913,064,118.24
  5. Step 5: Solve for x
    x = 105,913,064,118.24/391,121.92
  6. Step 6: Final answer
    x = 270,792.96

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1.5x scale

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.