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Finding the Fourth Proportional to 480,814.08, 663,300 and 311,102.88

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Solution

The fourth proportional to 480,814.08, 663,300 and 311,102.88 is: 429,177.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,814.08 : 663,300 = 311,102.88 : x
  2. Step 2: Convert to fraction form
    480,814.08/663,300 = 311,102.88/x
  3. Step 3: Cross multiply
    480,814.08x = 663,300 × 311,102.88
  4. Step 4: Simplify right side
    480,814.08x = 206,354,540,304
  5. Step 5: Solve for x
    x = 206,354,540,304/480,814.08
  6. Step 6: Final answer
    x = 429,177.41

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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.