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Finding the Fourth Proportional to 266,482.50, 399,723.78 and 69,490.50

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Solution

The fourth proportional to 266,482.50, 399,723.78 and 69,490.50 is: 104,235.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,482.50 : 399,723.78 = 69,490.50 : x
  2. Step 2: Convert to fraction form
    266,482.50/399,723.78 = 69,490.50/x
  3. Step 3: Cross multiply
    266,482.50x = 399,723.78 × 69,490.50
  4. Step 4: Simplify right side
    266,482.50x = 27,777,005,334.09
  5. Step 5: Solve for x
    x = 27,777,005,334.09/266,482.50
  6. Step 6: Final answer
    x = 104,235.76

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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.