Home / 326,126.20-489,191.12-148,509.40

Finding the Fourth Proportional to 326,126.20, 489,191.12 and 148,509.40

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Solution

The fourth proportional to 326,126.20, 489,191.12 and 148,509.40 is: 222,764.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,126.20 : 489,191.12 = 148,509.40 : x
  2. Step 2: Convert to fraction form
    326,126.20/489,191.12 = 148,509.40/x
  3. Step 3: Cross multiply
    326,126.20x = 489,191.12 × 148,509.40
  4. Step 4: Simplify right side
    326,126.20x = 72,649,479,716.53
  5. Step 5: Solve for x
    x = 72,649,479,716.53/326,126.20
  6. Step 6: Final answer
    x = 222,764.93

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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.