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Finding the Fourth Proportional to 391,053.60, 548,949.60 and 391,053.60

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Solution

The fourth proportional to 391,053.60, 548,949.60 and 391,053.60 is: 548,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,053.60 : 548,949.60 = 391,053.60 : x
  2. Step 2: Convert to fraction form
    391,053.60/548,949.60 = 391,053.60/x
  3. Step 3: Cross multiply
    391,053.60x = 548,949.60 × 391,053.60
  4. Step 4: Simplify right side
    391,053.60x = 214,668,717,298.56
  5. Step 5: Solve for x
    x = 214,668,717,298.56/391,053.60
  6. Step 6: Final answer
    x = 548,949.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.