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Finding the Fourth Proportional to 266,657.80, 400,044.30 and 79,688.20

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Solution

The fourth proportional to 266,657.80, 400,044.30 and 79,688.20 is: 119,549.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,657.80 : 400,044.30 = 79,688.20 : x
  2. Step 2: Convert to fraction form
    266,657.80/400,044.30 = 79,688.20/x
  3. Step 3: Cross multiply
    266,657.80x = 400,044.30 × 79,688.20
  4. Step 4: Simplify right side
    266,657.80x = 31,878,810,187.26
  5. Step 5: Solve for x
    x = 31,878,810,187.26/266,657.80
  6. Step 6: Final answer
    x = 119,549.51

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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.