Home / 430,577.76-645,899.76-131,084.04

Finding the Fourth Proportional to 430,577.76, 645,899.76 and 131,084.04

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Solution

The fourth proportional to 430,577.76, 645,899.76 and 131,084.04 is: 196,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,577.76 : 645,899.76 = 131,084.04 : x
  2. Step 2: Convert to fraction form
    430,577.76/645,899.76 = 131,084.04/x
  3. Step 3: Cross multiply
    430,577.76x = 645,899.76 × 131,084.04
  4. Step 4: Simplify right side
    430,577.76x = 84,667,149,975.83
  5. Step 5: Solve for x
    x = 84,667,149,975.83/430,577.76
  6. Step 6: Final answer
    x = 196,636.14

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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.