Home / 309,919.68-464,835.60-99,530.28

Finding the Fourth Proportional to 309,919.68, 464,835.60 and 99,530.28

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Solution

The fourth proportional to 309,919.68, 464,835.60 and 99,530.28 is: 149,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,919.68 : 464,835.60 = 99,530.28 : x
  2. Step 2: Convert to fraction form
    309,919.68/464,835.60 = 99,530.28/x
  3. Step 3: Cross multiply
    309,919.68x = 464,835.60 × 99,530.28
  4. Step 4: Simplify right side
    309,919.68x = 46,265,217,421.97
  5. Step 5: Solve for x
    x = 46,265,217,421.97/309,919.68
  6. Step 6: Final answer
    x = 149,281.32

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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.