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Finding the Fourth Proportional to 402,711.12, 555,910.56 and 271,913.40

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Solution

The fourth proportional to 402,711.12, 555,910.56 and 271,913.40 is: 375,354.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,711.12 : 555,910.56 = 271,913.40 : x
  2. Step 2: Convert to fraction form
    402,711.12/555,910.56 = 271,913.40/x
  3. Step 3: Cross multiply
    402,711.12x = 555,910.56 × 271,913.40
  4. Step 4: Simplify right side
    402,711.12x = 151,159,530,465.50
  5. Step 5: Solve for x
    x = 151,159,530,465.50/402,711.12
  6. Step 6: Final answer
    x = 375,354.75

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1.5x scale

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.