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Finding the Fourth Proportional to 240,541.68, 360,618.12 and 100,405.20

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Solution

The fourth proportional to 240,541.68, 360,618.12 and 100,405.20 is: 150,526.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,541.68 : 360,618.12 = 100,405.20 : x
  2. Step 2: Convert to fraction form
    240,541.68/360,618.12 = 100,405.20/x
  3. Step 3: Cross multiply
    240,541.68x = 360,618.12 × 100,405.20
  4. Step 4: Simplify right side
    240,541.68x = 36,207,934,462.22
  5. Step 5: Solve for x
    x = 36,207,934,462.22/240,541.68
  6. Step 6: Final answer
    x = 150,526.65

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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.