Home / 326,123.20-489,269.85-126,450.10

Finding the Fourth Proportional to 326,123.20, 489,269.85 and 126,450.10

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Solution

The fourth proportional to 326,123.20, 489,269.85 and 126,450.10 is: 189,708.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,123.20 : 489,269.85 = 126,450.10 : x
  2. Step 2: Convert to fraction form
    326,123.20/489,269.85 = 126,450.10/x
  3. Step 3: Cross multiply
    326,123.20x = 489,269.85 × 126,450.10
  4. Step 4: Simplify right side
    326,123.20x = 61,868,221,459.49
  5. Step 5: Solve for x
    x = 61,868,221,459.49/326,123.20
  6. Step 6: Final answer
    x = 189,708.13

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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.