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Finding the Fourth Proportional to 283,141.44, 390,734.92 and 155,817.03

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Solution

The fourth proportional to 283,141.44, 390,734.92 and 155,817.03 is: 215,027.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,141.44 : 390,734.92 = 155,817.03 : x
  2. Step 2: Convert to fraction form
    283,141.44/390,734.92 = 155,817.03/x
  3. Step 3: Cross multiply
    283,141.44x = 390,734.92 × 155,817.03
  4. Step 4: Simplify right side
    283,141.44x = 60,883,156,411.71
  5. Step 5: Solve for x
    x = 60,883,156,411.71/283,141.44
  6. Step 6: Final answer
    x = 215,027.36

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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.