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Finding the Fourth Proportional to 445,899.67, 615,341.99 and 254,917.15

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Solution

The fourth proportional to 445,899.67, 615,341.99 and 254,917.15 is: 351,785.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,899.67 : 615,341.99 = 254,917.15 : x
  2. Step 2: Convert to fraction form
    445,899.67/615,341.99 = 254,917.15/x
  3. Step 3: Cross multiply
    445,899.67x = 615,341.99 × 254,917.15
  4. Step 4: Simplify right side
    445,899.67x = 156,861,225,465.07
  5. Step 5: Solve for x
    x = 156,861,225,465.07/445,899.67
  6. Step 6: Final answer
    x = 351,785.92

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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.