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Finding the Fourth Proportional to 486,711.36, 671,662.08 and 271,851.12

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Solution

The fourth proportional to 486,711.36, 671,662.08 and 271,851.12 is: 375,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,711.36 : 671,662.08 = 271,851.12 : x
  2. Step 2: Convert to fraction form
    486,711.36/671,662.08 = 271,851.12/x
  3. Step 3: Cross multiply
    486,711.36x = 671,662.08 × 271,851.12
  4. Step 4: Simplify right side
    486,711.36x = 182,592,088,709.53
  5. Step 5: Solve for x
    x = 182,592,088,709.53/486,711.36
  6. Step 6: Final answer
    x = 375,154.77

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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.