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Finding the Fourth Proportional to 342,891.70, 514,337.55 and 121,275.70

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Solution

The fourth proportional to 342,891.70, 514,337.55 and 121,275.70 is: 181,913.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,891.70 : 514,337.55 = 121,275.70 : x
  2. Step 2: Convert to fraction form
    342,891.70/514,337.55 = 121,275.70/x
  3. Step 3: Cross multiply
    342,891.70x = 514,337.55 × 121,275.70
  4. Step 4: Simplify right side
    342,891.70x = 62,376,646,412.54
  5. Step 5: Solve for x
    x = 62,376,646,412.54/342,891.70
  6. Step 6: Final answer
    x = 181,913.55

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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.