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Finding the Fourth Proportional to 312,479.48, 468,741.14 and 125,491

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Solution

The fourth proportional to 312,479.48, 468,741.14 and 125,491 is: 188,245.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,479.48 : 468,741.14 = 125,491 : x
  2. Step 2: Convert to fraction form
    312,479.48/468,741.14 = 125,491/x
  3. Step 3: Cross multiply
    312,479.48x = 468,741.14 × 125,491
  4. Step 4: Simplify right side
    312,479.48x = 58,822,794,399.74
  5. Step 5: Solve for x
    x = 58,822,794,399.74/312,479.48
  6. Step 6: Final answer
    x = 188,245.30

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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.