Home / 266,977.40-399,882.90-207,345.20

Finding the Fourth Proportional to 266,977.40, 399,882.90 and 207,345.20

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Solution

The fourth proportional to 266,977.40, 399,882.90 and 207,345.20 is: 310,564.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,977.40 : 399,882.90 = 207,345.20 : x
  2. Step 2: Convert to fraction form
    266,977.40/399,882.90 = 207,345.20/x
  3. Step 3: Cross multiply
    266,977.40x = 399,882.90 × 207,345.20
  4. Step 4: Simplify right side
    266,977.40x = 82,913,799,877.08
  5. Step 5: Solve for x
    x = 82,913,799,877.08/266,977.40
  6. Step 6: Final answer
    x = 310,564.86

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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.