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Finding the Fourth Proportional to 443,400.79, 611,698.72 and 271,327.02

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Solution

The fourth proportional to 443,400.79, 611,698.72 and 271,327.02 is: 374,312.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,400.79 : 611,698.72 = 271,327.02 : x
  2. Step 2: Convert to fraction form
    443,400.79/611,698.72 = 271,327.02/x
  3. Step 3: Cross multiply
    443,400.79x = 611,698.72 × 271,327.02
  4. Step 4: Simplify right side
    443,400.79x = 165,970,390,835.41
  5. Step 5: Solve for x
    x = 165,970,390,835.41/443,400.79
  6. Step 6: Final answer
    x = 374,312.35

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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.