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Finding the Fourth Proportional to 266,051.30, 399,075.90 and 79,062.80

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Solution

The fourth proportional to 266,051.30, 399,075.90 and 79,062.80 is: 118,593.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,051.30 : 399,075.90 = 79,062.80 : x
  2. Step 2: Convert to fraction form
    266,051.30/399,075.90 = 79,062.80/x
  3. Step 3: Cross multiply
    266,051.30x = 399,075.90 × 79,062.80
  4. Step 4: Simplify right side
    266,051.30x = 31,552,058,066.52
  5. Step 5: Solve for x
    x = 31,552,058,066.52/266,051.30
  6. Step 6: Final answer
    x = 118,593.89

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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.