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Finding the Fourth Proportional to 343,280.60, 514,920.90 and 231,306.20

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Solution

The fourth proportional to 343,280.60, 514,920.90 and 231,306.20 is: 346,959.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,280.60 : 514,920.90 = 231,306.20 : x
  2. Step 2: Convert to fraction form
    343,280.60/514,920.90 = 231,306.20/x
  3. Step 3: Cross multiply
    343,280.60x = 514,920.90 × 231,306.20
  4. Step 4: Simplify right side
    343,280.60x = 119,104,396,679.58
  5. Step 5: Solve for x
    x = 119,104,396,679.58/343,280.60
  6. Step 6: Final answer
    x = 346,959.30

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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.