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Finding the Fourth Proportional to 162,456.30, 243,684.45 and 155,457.90

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Solution

The fourth proportional to 162,456.30, 243,684.45 and 155,457.90 is: 233,186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,456.30 : 243,684.45 = 155,457.90 : x
  2. Step 2: Convert to fraction form
    162,456.30/243,684.45 = 155,457.90/x
  3. Step 3: Cross multiply
    162,456.30x = 243,684.45 × 155,457.90
  4. Step 4: Simplify right side
    162,456.30x = 37,882,672,859.66
  5. Step 5: Solve for x
    x = 37,882,672,859.66/162,456.30
  6. Step 6: Final answer
    x = 233,186.85

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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.