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Finding the Fourth Proportional to 282,008.80, 423,013.20 and 264,512.80

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Solution

The fourth proportional to 282,008.80, 423,013.20 and 264,512.80 is: 396,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,008.80 : 423,013.20 = 264,512.80 : x
  2. Step 2: Convert to fraction form
    282,008.80/423,013.20 = 264,512.80/x
  3. Step 3: Cross multiply
    282,008.80x = 423,013.20 × 264,512.80
  4. Step 4: Simplify right side
    282,008.80x = 111,892,405,968.96
  5. Step 5: Solve for x
    x = 111,892,405,968.96/282,008.80
  6. Step 6: Final answer
    x = 396,769.20

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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.