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Finding the Fourth Proportional to 348,098.80, 521,111.40 and 207,785.20

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Solution

The fourth proportional to 348,098.80, 521,111.40 and 207,785.20 is: 311,058.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,098.80 : 521,111.40 = 207,785.20 : x
  2. Step 2: Convert to fraction form
    348,098.80/521,111.40 = 207,785.20/x
  3. Step 3: Cross multiply
    348,098.80x = 521,111.40 × 207,785.20
  4. Step 4: Simplify right side
    348,098.80x = 108,279,236,471.28
  5. Step 5: Solve for x
    x = 108,279,236,471.28/348,098.80
  6. Step 6: Final answer
    x = 311,058.92

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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.