Home / 260,032.90-390,049.35-212,793.70

Finding the Fourth Proportional to 260,032.90, 390,049.35 and 212,793.70

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Solution

The fourth proportional to 260,032.90, 390,049.35 and 212,793.70 is: 319,190.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,032.90 : 390,049.35 = 212,793.70 : x
  2. Step 2: Convert to fraction form
    260,032.90/390,049.35 = 212,793.70/x
  3. Step 3: Cross multiply
    260,032.90x = 390,049.35 × 212,793.70
  4. Step 4: Simplify right side
    260,032.90x = 83,000,044,369.10
  5. Step 5: Solve for x
    x = 83,000,044,369.10/260,032.90
  6. Step 6: Final answer
    x = 319,190.55

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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.