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Finding the Fourth Proportional to 445,812.56, 615,221.25 and 254,830.05

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Solution

The fourth proportional to 445,812.56, 615,221.25 and 254,830.05 is: 351,665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,812.56 : 615,221.25 = 254,830.05 : x
  2. Step 2: Convert to fraction form
    445,812.56/615,221.25 = 254,830.05/x
  3. Step 3: Cross multiply
    445,812.56x = 615,221.25 × 254,830.05
  4. Step 4: Simplify right side
    445,812.56x = 156,776,858,822.46
  5. Step 5: Solve for x
    x = 156,776,858,822.46/445,812.56
  6. Step 6: Final answer
    x = 351,665.42

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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.