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Finding the Fourth Proportional to 238,171.52, 328,658.64 and 130,724.48

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Solution

The fourth proportional to 238,171.52, 328,658.64 and 130,724.48 is: 180,389.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,171.52 : 328,658.64 = 130,724.48 : x
  2. Step 2: Convert to fraction form
    238,171.52/328,658.64 = 130,724.48/x
  3. Step 3: Cross multiply
    238,171.52x = 328,658.64 × 130,724.48
  4. Step 4: Simplify right side
    238,171.52x = 42,963,729,811.51
  5. Step 5: Solve for x
    x = 42,963,729,811.51/238,171.52
  6. Step 6: Final answer
    x = 180,389.87

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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.