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Finding the Fourth Proportional to 515,259.59, 772,959.63 and 178,209.87

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Solution

The fourth proportional to 515,259.59, 772,959.63 and 178,209.87 is: 267,339.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,259.59 : 772,959.63 = 178,209.87 : x
  2. Step 2: Convert to fraction form
    515,259.59/772,959.63 = 178,209.87/x
  3. Step 3: Cross multiply
    515,259.59x = 772,959.63 × 178,209.87
  4. Step 4: Simplify right side
    515,259.59x = 137,749,035,177.55
  5. Step 5: Solve for x
    x = 137,749,035,177.55/515,259.59
  6. Step 6: Final answer
    x = 267,339.10

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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.