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Finding the Fourth Proportional to 561,753.45, 842,636.33 and 162,397.69

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Solution

The fourth proportional to 561,753.45, 842,636.33 and 162,397.69 is: 243,598.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,753.45 : 842,636.33 = 162,397.69 : x
  2. Step 2: Convert to fraction form
    561,753.45/842,636.33 = 162,397.69/x
  3. Step 3: Cross multiply
    561,753.45x = 842,636.33 × 162,397.69
  4. Step 4: Simplify right side
    561,753.45x = 136,842,189,288.90
  5. Step 5: Solve for x
    x = 136,842,189,288.90/561,753.45
  6. Step 6: Final answer
    x = 243,598.31

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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.