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Finding the Fourth Proportional to 445,920.87, 615,195.62 and 254,831.74

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Solution

The fourth proportional to 445,920.87, 615,195.62 and 254,831.74 is: 351,567.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,920.87 : 615,195.62 = 254,831.74 : x
  2. Step 2: Convert to fraction form
    445,920.87/615,195.62 = 254,831.74/x
  3. Step 3: Cross multiply
    445,920.87x = 615,195.62 × 254,831.74
  4. Step 4: Simplify right side
    445,920.87x = 156,771,369,010.82
  5. Step 5: Solve for x
    x = 156,771,369,010.82/445,920.87
  6. Step 6: Final answer
    x = 351,567.69

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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.