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Finding the Fourth Proportional to 157,678.40, 236,517.60 and 155,086.40

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Solution

The fourth proportional to 157,678.40, 236,517.60 and 155,086.40 is: 232,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,678.40 : 236,517.60 = 155,086.40 : x
  2. Step 2: Convert to fraction form
    157,678.40/236,517.60 = 155,086.40/x
  3. Step 3: Cross multiply
    157,678.40x = 236,517.60 × 155,086.40
  4. Step 4: Simplify right side
    157,678.40x = 36,680,663,120.64
  5. Step 5: Solve for x
    x = 36,680,663,120.64/157,678.40
  6. Step 6: Final answer
    x = 232,629.60

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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.