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Finding the Fourth Proportional to 356,218.56, 534,363.48 and 131,637.96

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Solution

The fourth proportional to 356,218.56, 534,363.48 and 131,637.96 is: 197,470.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,218.56 : 534,363.48 = 131,637.96 : x
  2. Step 2: Convert to fraction form
    356,218.56/534,363.48 = 131,637.96/x
  3. Step 3: Cross multiply
    356,218.56x = 534,363.48 × 131,637.96
  4. Step 4: Simplify right side
    356,218.56x = 70,342,518,405.70
  5. Step 5: Solve for x
    x = 70,342,518,405.70/356,218.56
  6. Step 6: Final answer
    x = 197,470.11

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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.