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Finding the Fourth Proportional to 347,292.72, 521,810.84 and 220,987.80

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Solution

The fourth proportional to 347,292.72, 521,810.84 and 220,987.80 is: 332,036.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,292.72 : 521,810.84 = 220,987.80 : x
  2. Step 2: Convert to fraction form
    347,292.72/521,810.84 = 220,987.80/x
  3. Step 3: Cross multiply
    347,292.72x = 521,810.84 × 220,987.80
  4. Step 4: Simplify right side
    347,292.72x = 115,313,830,100.22
  5. Step 5: Solve for x
    x = 115,313,830,100.22/347,292.72
  6. Step 6: Final answer
    x = 332,036.42

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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.