Home / 260,543.70-390,945.15-102,777.30

Finding the Fourth Proportional to 260,543.70, 390,945.15 and 102,777.30

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Solution

The fourth proportional to 260,543.70, 390,945.15 and 102,777.30 is: 154,217.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,543.70 : 390,945.15 = 102,777.30 : x
  2. Step 2: Convert to fraction form
    260,543.70/390,945.15 = 102,777.30/x
  3. Step 3: Cross multiply
    260,543.70x = 390,945.15 × 102,777.30
  4. Step 4: Simplify right side
    260,543.70x = 40,180,286,965.10
  5. Step 5: Solve for x
    x = 40,180,286,965.10/260,543.70
  6. Step 6: Final answer
    x = 154,217.07

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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.