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Finding the Fourth Proportional to 445,831.20, 615,247 and 254,848.68

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Solution

The fourth proportional to 445,831.20, 615,247 and 254,848.68 is: 351,691.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,831.20 : 615,247 = 254,848.68 : x
  2. Step 2: Convert to fraction form
    445,831.20/615,247 = 254,848.68/x
  3. Step 3: Cross multiply
    445,831.20x = 615,247 × 254,848.68
  4. Step 4: Simplify right side
    445,831.20x = 156,794,885,823.96
  5. Step 5: Solve for x
    x = 156,794,885,823.96/445,831.20
  6. Step 6: Final answer
    x = 351,691.15

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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.