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Finding the Fourth Proportional to 472,258.40, 708,387.60 and 156,725.60

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Solution

The fourth proportional to 472,258.40, 708,387.60 and 156,725.60 is: 235,088.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,258.40 : 708,387.60 = 156,725.60 : x
  2. Step 2: Convert to fraction form
    472,258.40/708,387.60 = 156,725.60/x
  3. Step 3: Cross multiply
    472,258.40x = 708,387.60 × 156,725.60
  4. Step 4: Simplify right side
    472,258.40x = 111,022,471,642.56
  5. Step 5: Solve for x
    x = 111,022,471,642.56/472,258.40
  6. Step 6: Final answer
    x = 235,088.40

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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.