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Finding the Fourth Proportional to 312,287.02, 468,360.48 and 143,645.39

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Solution

The fourth proportional to 312,287.02, 468,360.48 and 143,645.39 is: 215,435.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,287.02 : 468,360.48 = 143,645.39 : x
  2. Step 2: Convert to fraction form
    312,287.02/468,360.48 = 143,645.39/x
  3. Step 3: Cross multiply
    312,287.02x = 468,360.48 × 143,645.39
  4. Step 4: Simplify right side
    312,287.02x = 67,277,823,810.19
  5. Step 5: Solve for x
    x = 67,277,823,810.19/312,287.02
  6. Step 6: Final answer
    x = 215,435.86

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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.