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Finding the Fourth Proportional to 518,231.02, 777,451 and 218,711.92

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Solution

The fourth proportional to 518,231.02, 777,451 and 218,711.92 is: 328,111.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,231.02 : 777,451 = 218,711.92 : x
  2. Step 2: Convert to fraction form
    518,231.02/777,451 = 218,711.92/x
  3. Step 3: Cross multiply
    518,231.02x = 777,451 × 218,711.92
  4. Step 4: Simplify right side
    518,231.02x = 170,037,800,915.92
  5. Step 5: Solve for x
    x = 170,037,800,915.92/518,231.02
  6. Step 6: Final answer
    x = 328,111.97

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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.