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Finding the Fourth Proportional to 326,219.32, 489,270.66 and 89,530.84

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Solution

The fourth proportional to 326,219.32, 489,270.66 and 89,530.84 is: 134,280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,219.32 : 489,270.66 = 89,530.84 : x
  2. Step 2: Convert to fraction form
    326,219.32/489,270.66 = 89,530.84/x
  3. Step 3: Cross multiply
    326,219.32x = 489,270.66 × 89,530.84
  4. Step 4: Simplify right side
    326,219.32x = 43,804,813,177.15
  5. Step 5: Solve for x
    x = 43,804,813,177.15/326,219.32
  6. Step 6: Final answer
    x = 134,280.25

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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.