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Finding the Fourth Proportional to 266,509.20, 399,107.70 and 177,279.60

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Solution

The fourth proportional to 266,509.20, 399,107.70 and 177,279.60 is: 265,482.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,509.20 : 399,107.70 = 177,279.60 : x
  2. Step 2: Convert to fraction form
    266,509.20/399,107.70 = 177,279.60/x
  3. Step 3: Cross multiply
    266,509.20x = 399,107.70 × 177,279.60
  4. Step 4: Simplify right side
    266,509.20x = 70,753,653,412.92
  5. Step 5: Solve for x
    x = 70,753,653,412.92/266,509.20
  6. Step 6: Final answer
    x = 265,482.97

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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.