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Finding the Fourth Proportional to 478,230.39, 716,375.61 and 221,702.18

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Solution

The fourth proportional to 478,230.39, 716,375.61 and 221,702.18 is: 332,103.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,230.39 : 716,375.61 = 221,702.18 : x
  2. Step 2: Convert to fraction form
    478,230.39/716,375.61 = 221,702.18/x
  3. Step 3: Cross multiply
    478,230.39x = 716,375.61 × 221,702.18
  4. Step 4: Simplify right side
    478,230.39x = 158,822,030,853.95
  5. Step 5: Solve for x
    x = 158,822,030,853.95/478,230.39
  6. Step 6: Final answer
    x = 332,103.59

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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.