Home / 439,619.10-659,428.65-203,423.10

Finding the Fourth Proportional to 439,619.10, 659,428.65 and 203,423.10

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Solution

The fourth proportional to 439,619.10, 659,428.65 and 203,423.10 is: 305,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,619.10 : 659,428.65 = 203,423.10 : x
  2. Step 2: Convert to fraction form
    439,619.10/659,428.65 = 203,423.10/x
  3. Step 3: Cross multiply
    439,619.10x = 659,428.65 × 203,423.10
  4. Step 4: Simplify right side
    439,619.10x = 134,143,020,211.82
  5. Step 5: Solve for x
    x = 134,143,020,211.82/439,619.10
  6. Step 6: Final answer
    x = 305,134.65

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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.