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Finding the Fourth Proportional to 347,989.20, 521,983.80 and 170,842.20

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Solution

The fourth proportional to 347,989.20, 521,983.80 and 170,842.20 is: 256,263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,989.20 : 521,983.80 = 170,842.20 : x
  2. Step 2: Convert to fraction form
    347,989.20/521,983.80 = 170,842.20/x
  3. Step 3: Cross multiply
    347,989.20x = 521,983.80 × 170,842.20
  4. Step 4: Simplify right side
    347,989.20x = 89,176,860,756.36
  5. Step 5: Solve for x
    x = 89,176,860,756.36/347,989.20
  6. Step 6: Final answer
    x = 256,263.30

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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.