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Finding the Fourth Proportional to 266,072.90, 399,145.80 and 88,561.40

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Solution

The fourth proportional to 266,072.90, 399,145.80 and 88,561.40 is: 132,854.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,072.90 : 399,145.80 = 88,561.40 : x
  2. Step 2: Convert to fraction form
    266,072.90/399,145.80 = 88,561.40/x
  3. Step 3: Cross multiply
    266,072.90x = 399,145.80 × 88,561.40
  4. Step 4: Simplify right side
    266,072.90x = 35,348,910,852.12
  5. Step 5: Solve for x
    x = 35,348,910,852.12/266,072.90
  6. Step 6: Final answer
    x = 132,854.23

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1.5x scale

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.