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Finding the Fourth Proportional to 480,831.08, 663,323.46 and 311,119.88

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Solution

The fourth proportional to 480,831.08, 663,323.46 and 311,119.88 is: 429,200.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,831.08 : 663,323.46 = 311,119.88 : x
  2. Step 2: Convert to fraction form
    480,831.08/663,323.46 = 311,119.88/x
  3. Step 3: Cross multiply
    480,831.08x = 663,323.46 × 311,119.88
  4. Step 4: Simplify right side
    480,831.08x = 206,373,115,276.39
  5. Step 5: Solve for x
    x = 206,373,115,276.39/480,831.08
  6. Step 6: Final answer
    x = 429,200.86

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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.