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Finding the Fourth Proportional to 159,439.80, 239,159.70 and 153,316.20

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Solution

The fourth proportional to 159,439.80, 239,159.70 and 153,316.20 is: 229,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,439.80 : 239,159.70 = 153,316.20 : x
  2. Step 2: Convert to fraction form
    159,439.80/239,159.70 = 153,316.20/x
  3. Step 3: Cross multiply
    159,439.80x = 239,159.70 × 153,316.20
  4. Step 4: Simplify right side
    159,439.80x = 36,667,056,397.14
  5. Step 5: Solve for x
    x = 36,667,056,397.14/159,439.80
  6. Step 6: Final answer
    x = 229,974.30

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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.