Home / 326,041.15-489,061.73-220,287.55

Finding the Fourth Proportional to 326,041.15, 489,061.73 and 220,287.55

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Solution

The fourth proportional to 326,041.15, 489,061.73 and 220,287.55 is: 330,431.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,041.15 : 489,061.73 = 220,287.55 : x
  2. Step 2: Convert to fraction form
    326,041.15/489,061.73 = 220,287.55/x
  3. Step 3: Cross multiply
    326,041.15x = 489,061.73 × 220,287.55
  4. Step 4: Simplify right side
    326,041.15x = 107,734,209,199.02
  5. Step 5: Solve for x
    x = 107,734,209,199.02/326,041.15
  6. Step 6: Final answer
    x = 330,431.33

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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.