Home / 515,043.20-772,564.80-215,424.20

Finding the Fourth Proportional to 515,043.20, 772,564.80 and 215,424.20

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Solution

The fourth proportional to 515,043.20, 772,564.80 and 215,424.20 is: 323,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,043.20 : 772,564.80 = 215,424.20 : x
  2. Step 2: Convert to fraction form
    515,043.20/772,564.80 = 215,424.20/x
  3. Step 3: Cross multiply
    515,043.20x = 772,564.80 × 215,424.20
  4. Step 4: Simplify right side
    515,043.20x = 166,429,153,988.16
  5. Step 5: Solve for x
    x = 166,429,153,988.16/515,043.20
  6. Step 6: Final answer
    x = 323,136.30

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Similar ratio
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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.