Home / 260,243.12-390,088.20-102,449.84

Finding the Fourth Proportional to 260,243.12, 390,088.20 and 102,449.84

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Solution

The fourth proportional to 260,243.12, 390,088.20 and 102,449.84 is: 153,565.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,243.12 : 390,088.20 = 102,449.84 : x
  2. Step 2: Convert to fraction form
    260,243.12/390,088.20 = 102,449.84/x
  3. Step 3: Cross multiply
    260,243.12x = 390,088.20 × 102,449.84
  4. Step 4: Simplify right side
    260,243.12x = 39,964,473,675.89
  5. Step 5: Solve for x
    x = 39,964,473,675.89/260,243.12
  6. Step 6: Final answer
    x = 153,565.92

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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.