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Finding the Fourth Proportional to 266,744.60, 400,398.88 and 260,720.90

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Solution

The fourth proportional to 266,744.60, 400,398.88 and 260,720.90 is: 391,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,744.60 : 400,398.88 = 260,720.90 : x
  2. Step 2: Convert to fraction form
    266,744.60/400,398.88 = 260,720.90/x
  3. Step 3: Cross multiply
    266,744.60x = 400,398.88 × 260,720.90
  4. Step 4: Simplify right side
    266,744.60x = 104,392,356,352.59
  5. Step 5: Solve for x
    x = 104,392,356,352.59/266,744.60
  6. Step 6: Final answer
    x = 391,356.96

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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.