Home / 312,625.36-468,981.78-102,221.38

Finding the Fourth Proportional to 312,625.36, 468,981.78 and 102,221.38

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Solution

The fourth proportional to 312,625.36, 468,981.78 and 102,221.38 is: 153,346.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,625.36 : 468,981.78 = 102,221.38 : x
  2. Step 2: Convert to fraction form
    312,625.36/468,981.78 = 102,221.38/x
  3. Step 3: Cross multiply
    312,625.36x = 468,981.78 × 102,221.38
  4. Step 4: Simplify right side
    312,625.36x = 47,939,964,746.46
  5. Step 5: Solve for x
    x = 47,939,964,746.46/312,625.36
  6. Step 6: Final answer
    x = 153,346.37

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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.