Home / 272,515.38-408,787.64-85,541.46

Finding the Fourth Proportional to 272,515.38, 408,787.64 and 85,541.46

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Solution

The fourth proportional to 272,515.38, 408,787.64 and 85,541.46 is: 128,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,515.38 : 408,787.64 = 85,541.46 : x
  2. Step 2: Convert to fraction form
    272,515.38/408,787.64 = 85,541.46/x
  3. Step 3: Cross multiply
    272,515.38x = 408,787.64 × 85,541.46
  4. Step 4: Simplify right side
    272,515.38x = 34,968,291,555.55
  5. Step 5: Solve for x
    x = 34,968,291,555.55/272,515.38
  6. Step 6: Final answer
    x = 128,316.76

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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.