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Finding the Fourth Proportional to 242,939.80, 335,199.88 and 147,444.28

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Solution

The fourth proportional to 242,939.80, 335,199.88 and 147,444.28 is: 203,438.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,939.80 : 335,199.88 = 147,444.28 : x
  2. Step 2: Convert to fraction form
    242,939.80/335,199.88 = 147,444.28/x
  3. Step 3: Cross multiply
    242,939.80x = 335,199.88 × 147,444.28
  4. Step 4: Simplify right side
    242,939.80x = 49,423,304,962.69
  5. Step 5: Solve for x
    x = 49,423,304,962.69/242,939.80
  6. Step 6: Final answer
    x = 203,438.49

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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.