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Finding the Fourth Proportional to 266,779.67, 400,140.02 and 67,100.13

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Solution

The fourth proportional to 266,779.67, 400,140.02 and 67,100.13 is: 100,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,779.67 : 400,140.02 = 67,100.13 : x
  2. Step 2: Convert to fraction form
    266,779.67/400,140.02 = 67,100.13/x
  3. Step 3: Cross multiply
    266,779.67x = 400,140.02 × 67,100.13
  4. Step 4: Simplify right side
    266,779.67x = 26,849,447,360.20
  5. Step 5: Solve for x
    x = 26,849,447,360.20/266,779.67
  6. Step 6: Final answer
    x = 100,642.78

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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.