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Finding the Fourth Proportional to 266,130.30, 399,195.45 and 255,632.70

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Solution

The fourth proportional to 266,130.30, 399,195.45 and 255,632.70 is: 383,449.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,130.30 : 399,195.45 = 255,632.70 : x
  2. Step 2: Convert to fraction form
    266,130.30/399,195.45 = 255,632.70/x
  3. Step 3: Cross multiply
    266,130.30x = 399,195.45 × 255,632.70
  4. Step 4: Simplify right side
    266,130.30x = 102,047,410,711.22
  5. Step 5: Solve for x
    x = 102,047,410,711.22/266,130.30
  6. Step 6: Final answer
    x = 383,449.05

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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.