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Finding the Fourth Proportional to 283,335.44, 390,998.76 and 156,007.76

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Solution

The fourth proportional to 283,335.44, 390,998.76 and 156,007.76 is: 215,288.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,335.44 : 390,998.76 = 156,007.76 : x
  2. Step 2: Convert to fraction form
    283,335.44/390,998.76 = 156,007.76/x
  3. Step 3: Cross multiply
    283,335.44x = 390,998.76 × 156,007.76
  4. Step 4: Simplify right side
    283,335.44x = 60,998,840,710.38
  5. Step 5: Solve for x
    x = 60,998,840,710.38/283,335.44
  6. Step 6: Final answer
    x = 215,288.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.