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Finding the Fourth Proportional to 347,652.80, 521,479.20 and 111,012.80

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Solution

The fourth proportional to 347,652.80, 521,479.20 and 111,012.80 is: 166,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,652.80 : 521,479.20 = 111,012.80 : x
  2. Step 2: Convert to fraction form
    347,652.80/521,479.20 = 111,012.80/x
  3. Step 3: Cross multiply
    347,652.80x = 521,479.20 × 111,012.80
  4. Step 4: Simplify right side
    347,652.80x = 57,890,866,133.76
  5. Step 5: Solve for x
    x = 57,890,866,133.76/347,652.80
  6. Step 6: Final answer
    x = 166,519.20

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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.