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Finding the Fourth Proportional to 386,244, 532,899.36 and 243,146.88

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Solution

The fourth proportional to 386,244, 532,899.36 and 243,146.88 is: 335,468.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,244 : 532,899.36 = 243,146.88 : x
  2. Step 2: Convert to fraction form
    386,244/532,899.36 = 243,146.88/x
  3. Step 3: Cross multiply
    386,244x = 532,899.36 × 243,146.88
  4. Step 4: Simplify right side
    386,244x = 129,572,816,738.00
  5. Step 5: Solve for x
    x = 129,572,816,738.00/386,244
  6. Step 6: Final answer
    x = 335,468.81

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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.