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Finding the Fourth Proportional to 266,205.60, 399,211.20 and 88,718.40

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Solution

The fourth proportional to 266,205.60, 399,211.20 and 88,718.40 is: 133,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,205.60 : 399,211.20 = 88,718.40 : x
  2. Step 2: Convert to fraction form
    266,205.60/399,211.20 = 88,718.40/x
  3. Step 3: Cross multiply
    266,205.60x = 399,211.20 × 88,718.40
  4. Step 4: Simplify right side
    266,205.60x = 35,417,378,926.08
  5. Step 5: Solve for x
    x = 35,417,378,926.08/266,205.60
  6. Step 6: Final answer
    x = 133,045.21

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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.