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Finding the Fourth Proportional to 423,256.80, 634,885.20 and 329,832.48

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Solution

The fourth proportional to 423,256.80, 634,885.20 and 329,832.48 is: 494,748.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,256.80 : 634,885.20 = 329,832.48 : x
  2. Step 2: Convert to fraction form
    423,256.80/634,885.20 = 329,832.48/x
  3. Step 3: Cross multiply
    423,256.80x = 634,885.20 × 329,832.48
  4. Step 4: Simplify right side
    423,256.80x = 209,405,760,031.30
  5. Step 5: Solve for x
    x = 209,405,760,031.30/423,256.80
  6. Step 6: Final answer
    x = 494,748.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.