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Finding the Fourth Proportional to 243,490.80, 336,010.85 and 136,061.72

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Solution

The fourth proportional to 243,490.80, 336,010.85 and 136,061.72 is: 187,761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,490.80 : 336,010.85 = 136,061.72 : x
  2. Step 2: Convert to fraction form
    243,490.80/336,010.85 = 136,061.72/x
  3. Step 3: Cross multiply
    243,490.80x = 336,010.85 × 136,061.72
  4. Step 4: Simplify right side
    243,490.80x = 45,718,212,849.76
  5. Step 5: Solve for x
    x = 45,718,212,849.76/243,490.80
  6. Step 6: Final answer
    x = 187,761.56

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1.5x scale

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.