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Finding the Fourth Proportional to 480,272.79, 720,409.19 and 180,820.55

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Solution

The fourth proportional to 480,272.79, 720,409.19 and 180,820.55 is: 271,230.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,272.79 : 720,409.19 = 180,820.55 : x
  2. Step 2: Convert to fraction form
    480,272.79/720,409.19 = 180,820.55/x
  3. Step 3: Cross multiply
    480,272.79x = 720,409.19 × 180,820.55
  4. Step 4: Simplify right side
    480,272.79x = 130,264,787,874.89
  5. Step 5: Solve for x
    x = 130,264,787,874.89/480,272.79
  6. Step 6: Final answer
    x = 271,230.83

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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.