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Finding the Fourth Proportional to 245,400.56, 368,105.51 and 76,917.18

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Solution

The fourth proportional to 245,400.56, 368,105.51 and 76,917.18 is: 115,377.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,400.56 : 368,105.51 = 76,917.18 : x
  2. Step 2: Convert to fraction form
    245,400.56/368,105.51 = 76,917.18/x
  3. Step 3: Cross multiply
    245,400.56x = 368,105.51 × 76,917.18
  4. Step 4: Simplify right side
    245,400.56x = 28,313,637,387.08
  5. Step 5: Solve for x
    x = 28,313,637,387.08/245,400.56
  6. Step 6: Final answer
    x = 115,377.23

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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.