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Finding the Fourth Proportional to 515,819.20, 773,728.80 and 160,830.40

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Solution

The fourth proportional to 515,819.20, 773,728.80 and 160,830.40 is: 241,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,819.20 : 773,728.80 = 160,830.40 : x
  2. Step 2: Convert to fraction form
    515,819.20/773,728.80 = 160,830.40/x
  3. Step 3: Cross multiply
    515,819.20x = 773,728.80 × 160,830.40
  4. Step 4: Simplify right side
    515,819.20x = 124,439,112,395.52
  5. Step 5: Solve for x
    x = 124,439,112,395.52/515,819.20
  6. Step 6: Final answer
    x = 241,245.60

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Similar ratio
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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.