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Finding the Fourth Proportional to 320,026.68, 479,510.28 and 287,060.76

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Solution

The fourth proportional to 320,026.68, 479,510.28 and 287,060.76 is: 430,115.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,026.68 : 479,510.28 = 287,060.76 : x
  2. Step 2: Convert to fraction form
    320,026.68/479,510.28 = 287,060.76/x
  3. Step 3: Cross multiply
    320,026.68x = 479,510.28 × 287,060.76
  4. Step 4: Simplify right side
    320,026.68x = 137,648,585,404.61
  5. Step 5: Solve for x
    x = 137,648,585,404.61/320,026.68
  6. Step 6: Final answer
    x = 430,115.97

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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.