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Finding the Fourth Proportional to 40,309.90, 60,465.00 and 12,230.20

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Solution

The fourth proportional to 40,309.90, 60,465.00 and 12,230.20 is: 18,345.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,309.90 : 60,465.00 = 12,230.20 : x
  2. Step 2: Convert to fraction form
    40,309.90/60,465.00 = 12,230.20/x
  3. Step 3: Cross multiply
    40,309.90x = 60,465.00 × 12,230.20
  4. Step 4: Simplify right side
    40,309.90x = 739,498,679.52
  5. Step 5: Solve for x
    x = 739,498,679.52/40,309.90
  6. Step 6: Final answer
    x = 18,345.34

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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.