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Finding the Fourth Proportional to 240,630.16, 360,820.66 and 128,280.20

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Solution

The fourth proportional to 240,630.16, 360,820.66 and 128,280.20 is: 192,353.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,630.16 : 360,820.66 = 128,280.20 : x
  2. Step 2: Convert to fraction form
    240,630.16/360,820.66 = 128,280.20/x
  3. Step 3: Cross multiply
    240,630.16x = 360,820.66 × 128,280.20
  4. Step 4: Simplify right side
    240,630.16x = 46,286,146,428.93
  5. Step 5: Solve for x
    x = 46,286,146,428.93/240,630.16
  6. Step 6: Final answer
    x = 192,353.89

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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.