Home / 289,340.20-434,139.90-131,487.40

Finding the Fourth Proportional to 289,340.20, 434,139.90 and 131,487.40

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Solution

The fourth proportional to 289,340.20, 434,139.90 and 131,487.40 is: 197,290.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,340.20 : 434,139.90 = 131,487.40 : x
  2. Step 2: Convert to fraction form
    289,340.20/434,139.90 = 131,487.40/x
  3. Step 3: Cross multiply
    289,340.20x = 434,139.90 × 131,487.40
  4. Step 4: Simplify right side
    289,340.20x = 57,083,926,687.26
  5. Step 5: Solve for x
    x = 57,083,926,687.26/289,340.20
  6. Step 6: Final answer
    x = 197,290.00

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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.