Home / 285,280.92-427,921.38-74,918.52

Finding the Fourth Proportional to 285,280.92, 427,921.38 and 74,918.52

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Solution

The fourth proportional to 285,280.92, 427,921.38 and 74,918.52 is: 112,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,280.92 : 427,921.38 = 74,918.52 : x
  2. Step 2: Convert to fraction form
    285,280.92/427,921.38 = 74,918.52/x
  3. Step 3: Cross multiply
    285,280.92x = 427,921.38 × 74,918.52
  4. Step 4: Simplify right side
    285,280.92x = 32,059,236,465.96
  5. Step 5: Solve for x
    x = 32,059,236,465.96/285,280.92
  6. Step 6: Final answer
    x = 112,377.78

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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.