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Finding the Fourth Proportional to 445,316.78, 667,921.86 and 125,492.63

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Solution

The fourth proportional to 445,316.78, 667,921.86 and 125,492.63 is: 188,223.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,316.78 : 667,921.86 = 125,492.63 : x
  2. Step 2: Convert to fraction form
    445,316.78/667,921.86 = 125,492.63/x
  3. Step 3: Cross multiply
    445,316.78x = 667,921.86 × 125,492.63
  4. Step 4: Simplify right side
    445,316.78x = 83,819,270,845.89
  5. Step 5: Solve for x
    x = 83,819,270,845.89/445,316.78
  6. Step 6: Final answer
    x = 188,223.92

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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.