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Finding the Fourth Proportional to 326,057.30, 489,085.95 and 136,484.90

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Solution

The fourth proportional to 326,057.30, 489,085.95 and 136,484.90 is: 204,727.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,057.30 : 489,085.95 = 136,484.90 : x
  2. Step 2: Convert to fraction form
    326,057.30/489,085.95 = 136,484.90/x
  3. Step 3: Cross multiply
    326,057.30x = 489,085.95 × 136,484.90
  4. Step 4: Simplify right side
    326,057.30x = 66,752,846,977.16
  5. Step 5: Solve for x
    x = 66,752,846,977.16/326,057.30
  6. Step 6: Final answer
    x = 204,727.35

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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.