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Finding the Fourth Proportional to 343,009.30, 514,314.48 and 129,793.67

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Solution

The fourth proportional to 343,009.30, 514,314.48 and 129,793.67 is: 194,615.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,009.30 : 514,314.48 = 129,793.67 : x
  2. Step 2: Convert to fraction form
    343,009.30/514,314.48 = 129,793.67/x
  3. Step 3: Cross multiply
    343,009.30x = 514,314.48 × 129,793.67
  4. Step 4: Simplify right side
    343,009.30x = 66,754,765,179.13
  5. Step 5: Solve for x
    x = 66,754,765,179.13/343,009.30
  6. Step 6: Final answer
    x = 194,615.03

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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.