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Finding the Fourth Proportional to 458,867.77, 688,315.22 and 219,006.94

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Solution

The fourth proportional to 458,867.77, 688,315.22 and 219,006.94 is: 328,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,867.77 : 688,315.22 = 219,006.94 : x
  2. Step 2: Convert to fraction form
    458,867.77/688,315.22 = 219,006.94/x
  3. Step 3: Cross multiply
    458,867.77x = 688,315.22 × 219,006.94
  4. Step 4: Simplify right side
    458,867.77x = 150,745,807,271.80
  5. Step 5: Solve for x
    x = 150,745,807,271.80/458,867.77
  6. Step 6: Final answer
    x = 328,516.88

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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.