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Finding the Fourth Proportional to 158,972.40, 238,458.60 and 156,639.60

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Solution

The fourth proportional to 158,972.40, 238,458.60 and 156,639.60 is: 234,959.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,972.40 : 238,458.60 = 156,639.60 : x
  2. Step 2: Convert to fraction form
    158,972.40/238,458.60 = 156,639.60/x
  3. Step 3: Cross multiply
    158,972.40x = 238,458.60 × 156,639.60
  4. Step 4: Simplify right side
    158,972.40x = 37,352,059,720.56
  5. Step 5: Solve for x
    x = 37,352,059,720.56/158,972.40
  6. Step 6: Final answer
    x = 234,959.40

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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.