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Finding the Fourth Proportional to 268,987.70, 403,534.72 and 79,451.36

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Solution

The fourth proportional to 268,987.70, 403,534.72 and 79,451.36 is: 119,192.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,987.70 : 403,534.72 = 79,451.36 : x
  2. Step 2: Convert to fraction form
    268,987.70/403,534.72 = 79,451.36/x
  3. Step 3: Cross multiply
    268,987.70x = 403,534.72 × 79,451.36
  4. Step 4: Simplify right side
    268,987.70x = 32,061,382,311.22
  5. Step 5: Solve for x
    x = 32,061,382,311.22/268,987.70
  6. Step 6: Final answer
    x = 119,192.74

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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.