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Finding the Fourth Proportional to 515,004.72, 772,541.04 and 178,077.96

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Solution

The fourth proportional to 515,004.72, 772,541.04 and 178,077.96 is: 267,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,004.72 : 772,541.04 = 178,077.96 : x
  2. Step 2: Convert to fraction form
    515,004.72/772,541.04 = 178,077.96/x
  3. Step 3: Cross multiply
    515,004.72x = 772,541.04 × 178,077.96
  4. Step 4: Simplify right side
    515,004.72x = 137,572,532,419.48
  5. Step 5: Solve for x
    x = 137,572,532,419.48/515,004.72
  6. Step 6: Final answer
    x = 267,128.68

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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.