Home / 353,982.16-531,089.88-129,411.28

Finding the Fourth Proportional to 353,982.16, 531,089.88 and 129,411.28

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Solution

The fourth proportional to 353,982.16, 531,089.88 and 129,411.28 is: 194,159.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,982.16 : 531,089.88 = 129,411.28 : x
  2. Step 2: Convert to fraction form
    353,982.16/531,089.88 = 129,411.28/x
  3. Step 3: Cross multiply
    353,982.16x = 531,089.88 × 129,411.28
  4. Step 4: Simplify right side
    353,982.16x = 68,729,021,165.85
  5. Step 5: Solve for x
    x = 68,729,021,165.85/353,982.16
  6. Step 6: Final answer
    x = 194,159.56

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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.