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Finding the Fourth Proportional to 245,506.92, 338,685.12 and 159,459.78

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Solution

The fourth proportional to 245,506.92, 338,685.12 and 159,459.78 is: 219,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,506.92 : 338,685.12 = 159,459.78 : x
  2. Step 2: Convert to fraction form
    245,506.92/338,685.12 = 159,459.78/x
  3. Step 3: Cross multiply
    245,506.92x = 338,685.12 × 159,459.78
  4. Step 4: Simplify right side
    245,506.92x = 54,006,654,724.47
  5. Step 5: Solve for x
    x = 54,006,654,724.47/245,506.92
  6. Step 6: Final answer
    x = 219,980.17

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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.