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Finding the Fourth Proportional to 287,851.70, 431,777.55 and 227,717.30

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Solution

The fourth proportional to 287,851.70, 431,777.55 and 227,717.30 is: 341,575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,851.70 : 431,777.55 = 227,717.30 : x
  2. Step 2: Convert to fraction form
    287,851.70/431,777.55 = 227,717.30/x
  3. Step 3: Cross multiply
    287,851.70x = 431,777.55 × 227,717.30
  4. Step 4: Simplify right side
    287,851.70x = 98,323,217,886.62
  5. Step 5: Solve for x
    x = 98,323,217,886.62/287,851.70
  6. Step 6: Final answer
    x = 341,575.95

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1.5x scale

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.