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Finding the Fourth Proportional to 869,793.90, 1,304,690.85 and 238,706.70

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Solution

The fourth proportional to 869,793.90, 1,304,690.85 and 238,706.70 is: 358,060.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,793.90 : 1,304,690.85 = 238,706.70 : x
  2. Step 2: Convert to fraction form
    869,793.90/1,304,690.85 = 238,706.70/x
  3. Step 3: Cross multiply
    869,793.90x = 1,304,690.85 × 238,706.70
  4. Step 4: Simplify right side
    869,793.90x = 311,438,447,323.70
  5. Step 5: Solve for x
    x = 311,438,447,323.70/869,793.90
  6. Step 6: Final answer
    x = 358,060.05

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Double scale
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Similar ratio
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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.