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Finding the Fourth Proportional to 343,834.60, 515,751.90 and 307,676.20

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Solution

The fourth proportional to 343,834.60, 515,751.90 and 307,676.20 is: 461,514.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,834.60 : 515,751.90 = 307,676.20 : x
  2. Step 2: Convert to fraction form
    343,834.60/515,751.90 = 307,676.20/x
  3. Step 3: Cross multiply
    343,834.60x = 515,751.90 × 307,676.20
  4. Step 4: Simplify right side
    343,834.60x = 158,684,584,734.78
  5. Step 5: Solve for x
    x = 158,684,584,734.78/343,834.60
  6. Step 6: Final answer
    x = 461,514.30

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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.