Home / 312,947.48-469,479.58-142,181.15

Finding the Fourth Proportional to 312,947.48, 469,479.58 and 142,181.15

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Solution

The fourth proportional to 312,947.48, 469,479.58 and 142,181.15 is: 213,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,947.48 : 469,479.58 = 142,181.15 : x
  2. Step 2: Convert to fraction form
    312,947.48/469,479.58 = 142,181.15/x
  3. Step 3: Cross multiply
    312,947.48x = 469,479.58 × 142,181.15
  4. Step 4: Simplify right side
    312,947.48x = 66,751,147,404.16
  5. Step 5: Solve for x
    x = 66,751,147,404.16/312,947.48
  6. Step 6: Final answer
    x = 213,298.24

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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.