Home / 260,111.20-390,188.40-102,344.80

Finding the Fourth Proportional to 260,111.20, 390,188.40 and 102,344.80

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Solution

The fourth proportional to 260,111.20, 390,188.40 and 102,344.80 is: 153,525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,111.20 : 390,188.40 = 102,344.80 : x
  2. Step 2: Convert to fraction form
    260,111.20/390,188.40 = 102,344.80/x
  3. Step 3: Cross multiply
    260,111.20x = 390,188.40 × 102,344.80
  4. Step 4: Simplify right side
    260,111.20x = 39,933,753,760.32
  5. Step 5: Solve for x
    x = 39,933,753,760.32/260,111.20
  6. Step 6: Final answer
    x = 153,525.70

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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.