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Finding the Fourth Proportional to 445,639.76, 615,061.49 and 264,451.60

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Solution

The fourth proportional to 445,639.76, 615,061.49 and 264,451.60 is: 364,989.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,639.76 : 615,061.49 = 264,451.60 : x
  2. Step 2: Convert to fraction form
    445,639.76/615,061.49 = 264,451.60/x
  3. Step 3: Cross multiply
    445,639.76x = 615,061.49 × 264,451.60
  4. Step 4: Simplify right side
    445,639.76x = 162,653,995,128.88
  5. Step 5: Solve for x
    x = 162,653,995,128.88/445,639.76
  6. Step 6: Final answer
    x = 364,989.86

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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.