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Finding the Fourth Proportional to 283,158.28, 390,766.17 and 155,841.67

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Solution

The fourth proportional to 283,158.28, 390,766.17 and 155,841.67 is: 215,065.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,158.28 : 390,766.17 = 155,841.67 : x
  2. Step 2: Convert to fraction form
    283,158.28/390,766.17 = 155,841.67/x
  3. Step 3: Cross multiply
    283,158.28x = 390,766.17 × 155,841.67
  4. Step 4: Simplify right side
    283,158.28x = 60,897,652,512.30
  5. Step 5: Solve for x
    x = 60,897,652,512.30/283,158.28
  6. Step 6: Final answer
    x = 215,065.77

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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.