Home / 354,186.17-531,138.30-129,495.41

Finding the Fourth Proportional to 354,186.17, 531,138.30 and 129,495.41

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Solution

The fourth proportional to 354,186.17, 531,138.30 and 129,495.41 is: 194,191.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,186.17 : 531,138.30 = 129,495.41 : x
  2. Step 2: Convert to fraction form
    354,186.17/531,138.30 = 129,495.41/x
  3. Step 3: Cross multiply
    354,186.17x = 531,138.30 × 129,495.41
  4. Step 4: Simplify right side
    354,186.17x = 68,779,969,269.51
  5. Step 5: Solve for x
    x = 68,779,969,269.51/354,186.17
  6. Step 6: Final answer
    x = 194,191.58

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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.