Home / 480,143.28-720,199.42-143,186.72

Finding the Fourth Proportional to 480,143.28, 720,199.42 and 143,186.72

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Solution

The fourth proportional to 480,143.28, 720,199.42 and 143,186.72 is: 214,775.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,143.28 : 720,199.42 = 143,186.72 : x
  2. Step 2: Convert to fraction form
    480,143.28/720,199.42 = 143,186.72/x
  3. Step 3: Cross multiply
    480,143.28x = 720,199.42 × 143,186.72
  4. Step 4: Simplify right side
    480,143.28x = 103,122,992,695.70
  5. Step 5: Solve for x
    x = 103,122,992,695.70/480,143.28
  6. Step 6: Final answer
    x = 214,775.46

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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.