Home / 481,269.60-721,904.40-257,320.80

Finding the Fourth Proportional to 481,269.60, 721,904.40 and 257,320.80

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Solution

The fourth proportional to 481,269.60, 721,904.40 and 257,320.80 is: 385,981.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,269.60 : 721,904.40 = 257,320.80 : x
  2. Step 2: Convert to fraction form
    481,269.60/721,904.40 = 257,320.80/x
  3. Step 3: Cross multiply
    481,269.60x = 721,904.40 × 257,320.80
  4. Step 4: Simplify right side
    481,269.60x = 185,761,017,731.52
  5. Step 5: Solve for x
    x = 185,761,017,731.52/481,269.60
  6. Step 6: Final answer
    x = 385,981.20

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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.