Home / 423,251.11-634,868.46-103,405.09

Finding the Fourth Proportional to 423,251.11, 634,868.46 and 103,405.09

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Solution

The fourth proportional to 423,251.11, 634,868.46 and 103,405.09 is: 155,105.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,251.11 : 634,868.46 = 103,405.09 : x
  2. Step 2: Convert to fraction form
    423,251.11/634,868.46 = 103,405.09/x
  3. Step 3: Cross multiply
    423,251.11x = 634,868.46 × 103,405.09
  4. Step 4: Simplify right side
    423,251.11x = 65,648,630,244.46
  5. Step 5: Solve for x
    x = 65,648,630,244.46/423,251.11
  6. Step 6: Final answer
    x = 155,105.63

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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.