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Finding the Fourth Proportional to 390,184.92, 538,451.94 and 274,061.52

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Solution

The fourth proportional to 390,184.92, 538,451.94 and 274,061.52 is: 378,202.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,184.92 : 538,451.94 = 274,061.52 : x
  2. Step 2: Convert to fraction form
    390,184.92/538,451.94 = 274,061.52/x
  3. Step 3: Cross multiply
    390,184.92x = 538,451.94 × 274,061.52
  4. Step 4: Simplify right side
    390,184.92x = 147,568,957,123.35
  5. Step 5: Solve for x
    x = 147,568,957,123.35/390,184.92
  6. Step 6: Final answer
    x = 378,202.62

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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.