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Finding the Fourth Proportional to 326,386.08, 489,579.12 and 89,753.76

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Solution

The fourth proportional to 326,386.08, 489,579.12 and 89,753.76 is: 134,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,386.08 : 489,579.12 = 89,753.76 : x
  2. Step 2: Convert to fraction form
    326,386.08/489,579.12 = 89,753.76/x
  3. Step 3: Cross multiply
    326,386.08x = 489,579.12 × 89,753.76
  4. Step 4: Simplify right side
    326,386.08x = 43,941,566,837.49
  5. Step 5: Solve for x
    x = 43,941,566,837.49/326,386.08
  6. Step 6: Final answer
    x = 134,630.64

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Similar ratio
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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.