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Finding the Fourth Proportional to 478,458.90, 717,785.55 and 162,947.70

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Solution

The fourth proportional to 478,458.90, 717,785.55 and 162,947.70 is: 244,454.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,458.90 : 717,785.55 = 162,947.70 : x
  2. Step 2: Convert to fraction form
    478,458.90/717,785.55 = 162,947.70/x
  3. Step 3: Cross multiply
    478,458.90x = 717,785.55 × 162,947.70
  4. Step 4: Simplify right side
    478,458.90x = 116,961,504,465.74
  5. Step 5: Solve for x
    x = 116,961,504,465.74/478,458.90
  6. Step 6: Final answer
    x = 244,454.65

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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.