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Finding the Fourth Proportional to 326,160.77, 489,123.90 and 112,870.76

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Solution

The fourth proportional to 326,160.77, 489,123.90 and 112,870.76 is: 169,265.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,160.77 : 489,123.90 = 112,870.76 : x
  2. Step 2: Convert to fraction form
    326,160.77/489,123.90 = 112,870.76/x
  3. Step 3: Cross multiply
    326,160.77x = 489,123.90 × 112,870.76
  4. Step 4: Simplify right side
    326,160.77x = 55,207,785,976.48
  5. Step 5: Solve for x
    x = 55,207,785,976.48/326,160.77
  6. Step 6: Final answer
    x = 169,265.56

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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.