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Finding the Fourth Proportional to 266,785.76, 400,178.64 and 100,534.88

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Solution

The fourth proportional to 266,785.76, 400,178.64 and 100,534.88 is: 150,802.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,785.76 : 400,178.64 = 100,534.88 : x
  2. Step 2: Convert to fraction form
    266,785.76/400,178.64 = 100,534.88/x
  3. Step 3: Cross multiply
    266,785.76x = 400,178.64 × 100,534.88
  4. Step 4: Simplify right side
    266,785.76x = 40,231,911,550.96
  5. Step 5: Solve for x
    x = 40,231,911,550.96/266,785.76
  6. Step 6: Final answer
    x = 150,802.32

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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.