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Finding the Fourth Proportional to 342,772.16, 514,227.68 and 121,311.68

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Solution

The fourth proportional to 342,772.16, 514,227.68 and 121,311.68 is: 181,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,772.16 : 514,227.68 = 121,311.68 : x
  2. Step 2: Convert to fraction form
    342,772.16/514,227.68 = 121,311.68/x
  3. Step 3: Cross multiply
    342,772.16x = 514,227.68 × 121,311.68
  4. Step 4: Simplify right side
    342,772.16x = 62,381,823,763.30
  5. Step 5: Solve for x
    x = 62,381,823,763.30/342,772.16
  6. Step 6: Final answer
    x = 181,992.10

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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.