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Finding the Fourth Proportional to 326,209.70, 489,314.55 and 238,081.70

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Solution

The fourth proportional to 326,209.70, 489,314.55 and 238,081.70 is: 357,122.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,209.70 : 489,314.55 = 238,081.70 : x
  2. Step 2: Convert to fraction form
    326,209.70/489,314.55 = 238,081.70/x
  3. Step 3: Cross multiply
    326,209.70x = 489,314.55 × 238,081.70
  4. Step 4: Simplify right side
    326,209.70x = 116,496,839,898.74
  5. Step 5: Solve for x
    x = 116,496,839,898.74/326,209.70
  6. Step 6: Final answer
    x = 357,122.55

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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.