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Finding the Fourth Proportional to 240,630.10, 360,820.56 and 128,280.15

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Solution

The fourth proportional to 240,630.10, 360,820.56 and 128,280.15 is: 192,353.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,630.10 : 360,820.56 = 128,280.15 : x
  2. Step 2: Convert to fraction form
    240,630.10/360,820.56 = 128,280.15/x
  3. Step 3: Cross multiply
    240,630.10x = 360,820.56 × 128,280.15
  4. Step 4: Simplify right side
    240,630.10x = 46,286,115,559.88
  5. Step 5: Solve for x
    x = 46,286,115,559.88/240,630.10
  6. Step 6: Final answer
    x = 192,353.81

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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.