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Finding the Fourth Proportional to 266,209.39, 399,315.11 and 66,529.99

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Solution

The fourth proportional to 266,209.39, 399,315.11 and 66,529.99 is: 99,795.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,209.39 : 399,315.11 = 66,529.99 : x
  2. Step 2: Convert to fraction form
    266,209.39/399,315.11 = 66,529.99/x
  3. Step 3: Cross multiply
    266,209.39x = 399,315.11 × 66,529.99
  4. Step 4: Simplify right side
    266,209.39x = 26,566,430,275.15
  5. Step 5: Solve for x
    x = 26,566,430,275.15/266,209.39
  6. Step 6: Final answer
    x = 99,795.24

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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.