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Finding the Fourth Proportional to 370,331.28, 555,382.32 and 133,644

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Solution

The fourth proportional to 370,331.28, 555,382.32 and 133,644 is: 200,424.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,331.28 : 555,382.32 = 133,644 : x
  2. Step 2: Convert to fraction form
    370,331.28/555,382.32 = 133,644/x
  3. Step 3: Cross multiply
    370,331.28x = 555,382.32 × 133,644
  4. Step 4: Simplify right side
    370,331.28x = 74,223,514,774.08
  5. Step 5: Solve for x
    x = 74,223,514,774.08/370,331.28
  6. Step 6: Final answer
    x = 200,424.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.