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Finding the Fourth Proportional to 238,105.77, 328,589.93 and 130,685.79

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Solution

The fourth proportional to 238,105.77, 328,589.93 and 130,685.79 is: 180,348.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,105.77 : 328,589.93 = 130,685.79 : x
  2. Step 2: Convert to fraction form
    238,105.77/328,589.93 = 130,685.79/x
  3. Step 3: Cross multiply
    238,105.77x = 328,589.93 × 130,685.79
  4. Step 4: Simplify right side
    238,105.77x = 42,942,033,934.67
  5. Step 5: Solve for x
    x = 42,942,033,934.67/238,105.77
  6. Step 6: Final answer
    x = 180,348.56

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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.