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Finding the Fourth Proportional to 165,220.46, 247,830.88 and 45,278.42

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Solution

The fourth proportional to 165,220.46, 247,830.88 and 45,278.42 is: 67,917.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,220.46 : 247,830.88 = 45,278.42 : x
  2. Step 2: Convert to fraction form
    165,220.46/247,830.88 = 45,278.42/x
  3. Step 3: Cross multiply
    165,220.46x = 247,830.88 × 45,278.42
  4. Step 4: Simplify right side
    165,220.46x = 11,221,390,673.61
  5. Step 5: Solve for x
    x = 11,221,390,673.61/165,220.46
  6. Step 6: Final answer
    x = 67,917.68

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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.