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Finding the Fourth Proportional to 326,257.55, 489,385.41 and 89,600.45

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Solution

The fourth proportional to 326,257.55, 489,385.41 and 89,600.45 is: 134,400.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,257.55 : 489,385.41 = 89,600.45 : x
  2. Step 2: Convert to fraction form
    326,257.55/489,385.41 = 89,600.45/x
  3. Step 3: Cross multiply
    326,257.55x = 489,385.41 × 89,600.45
  4. Step 4: Simplify right side
    326,257.55x = 43,849,152,959.43
  5. Step 5: Solve for x
    x = 43,849,152,959.43/326,257.55
  6. Step 6: Final answer
    x = 134,400.42

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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.