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Finding the Fourth Proportional to 343,387.60, 515,189.40 and 165,900.40

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Solution

The fourth proportional to 343,387.60, 515,189.40 and 165,900.40 is: 248,902.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,387.60 : 515,189.40 = 165,900.40 : x
  2. Step 2: Convert to fraction form
    343,387.60/515,189.40 = 165,900.40/x
  3. Step 3: Cross multiply
    343,387.60x = 515,189.40 × 165,900.40
  4. Step 4: Simplify right side
    343,387.60x = 85,470,127,535.76
  5. Step 5: Solve for x
    x = 85,470,127,535.76/343,387.60
  6. Step 6: Final answer
    x = 248,902.78

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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.