Home / 289,606.20-434,538.90-131,753.40

Finding the Fourth Proportional to 289,606.20, 434,538.90 and 131,753.40

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Solution

The fourth proportional to 289,606.20, 434,538.90 and 131,753.40 is: 197,689.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,606.20 : 434,538.90 = 131,753.40 : x
  2. Step 2: Convert to fraction form
    289,606.20/434,538.90 = 131,753.40/x
  3. Step 3: Cross multiply
    289,606.20x = 434,538.90 × 131,753.40
  4. Step 4: Simplify right side
    289,606.20x = 57,251,977,507.26
  5. Step 5: Solve for x
    x = 57,251,977,507.26/289,606.20
  6. Step 6: Final answer
    x = 197,689.06

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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.