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Finding the Fourth Proportional to 243,490.55, 336,010.51 and 136,061.47

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Solution

The fourth proportional to 243,490.55, 336,010.51 and 136,061.47 is: 187,761.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,490.55 : 336,010.51 = 136,061.47 : x
  2. Step 2: Convert to fraction form
    243,490.55/336,010.51 = 136,061.47/x
  3. Step 3: Cross multiply
    243,490.55x = 336,010.51 × 136,061.47
  4. Step 4: Simplify right side
    243,490.55x = 45,718,082,246.00
  5. Step 5: Solve for x
    x = 45,718,082,246.00/243,490.55
  6. Step 6: Final answer
    x = 187,761.22

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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.