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Finding the Fourth Proportional to 347,685.60, 521,528.40 and 248,152.80

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Solution

The fourth proportional to 347,685.60, 521,528.40 and 248,152.80 is: 372,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,685.60 : 521,528.40 = 248,152.80 : x
  2. Step 2: Convert to fraction form
    347,685.60/521,528.40 = 248,152.80/x
  3. Step 3: Cross multiply
    347,685.60x = 521,528.40 × 248,152.80
  4. Step 4: Simplify right side
    347,685.60x = 129,418,732,739.52
  5. Step 5: Solve for x
    x = 129,418,732,739.52/347,685.60
  6. Step 6: Final answer
    x = 372,229.20

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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.