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Finding the Fourth Proportional to 266,526.57, 399,859.11 and 79,538.07

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Solution

The fourth proportional to 266,526.57, 399,859.11 and 79,538.07 is: 119,327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,526.57 : 399,859.11 = 79,538.07 : x
  2. Step 2: Convert to fraction form
    266,526.57/399,859.11 = 79,538.07/x
  3. Step 3: Cross multiply
    266,526.57x = 399,859.11 × 79,538.07
  4. Step 4: Simplify right side
    266,526.57x = 31,804,021,881.32
  5. Step 5: Solve for x
    x = 31,804,021,881.32/266,526.57
  6. Step 6: Final answer
    x = 119,327.77

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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.