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Finding the Fourth Proportional to 243,754.56, 336,320.64 and 153,125.28

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Solution

The fourth proportional to 243,754.56, 336,320.64 and 153,125.28 is: 211,274.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,754.56 : 336,320.64 = 153,125.28 : x
  2. Step 2: Convert to fraction form
    243,754.56/336,320.64 = 153,125.28/x
  3. Step 3: Cross multiply
    243,754.56x = 336,320.64 × 153,125.28
  4. Step 4: Simplify right side
    243,754.56x = 51,499,192,169.78
  5. Step 5: Solve for x
    x = 51,499,192,169.78/243,754.56
  6. Step 6: Final answer
    x = 211,274.78

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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.