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Finding the Fourth Proportional to 161,487.80, 242,231.70 and 154,230.20

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Solution

The fourth proportional to 161,487.80, 242,231.70 and 154,230.20 is: 231,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,487.80 : 242,231.70 = 154,230.20 : x
  2. Step 2: Convert to fraction form
    161,487.80/242,231.70 = 154,230.20/x
  3. Step 3: Cross multiply
    161,487.80x = 242,231.70 × 154,230.20
  4. Step 4: Simplify right side
    161,487.80x = 37,359,443,537.34
  5. Step 5: Solve for x
    x = 37,359,443,537.34/161,487.80
  6. Step 6: Final answer
    x = 231,345.30

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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.