Home / 326,089.20-489,376.80-168,236.40

Finding the Fourth Proportional to 326,089.20, 489,376.80 and 168,236.40

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Solution

The fourth proportional to 326,089.20, 489,376.80 and 168,236.40 is: 252,479.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,089.20 : 489,376.80 = 168,236.40 : x
  2. Step 2: Convert to fraction form
    326,089.20/489,376.80 = 168,236.40/x
  3. Step 3: Cross multiply
    326,089.20x = 489,376.80 × 168,236.40
  4. Step 4: Simplify right side
    326,089.20x = 82,330,991,075.52
  5. Step 5: Solve for x
    x = 82,330,991,075.52/326,089.20
  6. Step 6: Final answer
    x = 252,479.97

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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.