Home / 347,780.20-520,979.10-199,863.40

Finding the Fourth Proportional to 347,780.20, 520,979.10 and 199,863.40

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Solution

The fourth proportional to 347,780.20, 520,979.10 and 199,863.40 is: 299,397.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,780.20 : 520,979.10 = 199,863.40 : x
  2. Step 2: Convert to fraction form
    347,780.20/520,979.10 = 199,863.40/x
  3. Step 3: Cross multiply
    347,780.20x = 520,979.10 × 199,863.40
  4. Step 4: Simplify right side
    347,780.20x = 104,124,654,254.94
  5. Step 5: Solve for x
    x = 104,124,654,254.94/347,780.20
  6. Step 6: Final answer
    x = 299,397.88

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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.