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Finding the Fourth Proportional to 445,814.80, 615,214.20 and 254,816.80

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Solution

The fourth proportional to 445,814.80, 615,214.20 and 254,816.80 is: 351,641.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,814.80 : 615,214.20 = 254,816.80 : x
  2. Step 2: Convert to fraction form
    445,814.80/615,214.20 = 254,816.80/x
  3. Step 3: Cross multiply
    445,814.80x = 615,214.20 × 254,816.80
  4. Step 4: Simplify right side
    445,814.80x = 156,766,913,758.56
  5. Step 5: Solve for x
    x = 156,766,913,758.56/445,814.80
  6. Step 6: Final answer
    x = 351,641.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.