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Finding the Fourth Proportional to 421,097.78, 631,406.54 and 250,391.54

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Solution

The fourth proportional to 421,097.78, 631,406.54 and 250,391.54 is: 375,444.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,097.78 : 631,406.54 = 250,391.54 : x
  2. Step 2: Convert to fraction form
    421,097.78/631,406.54 = 250,391.54/x
  3. Step 3: Cross multiply
    421,097.78x = 631,406.54 × 250,391.54
  4. Step 4: Simplify right side
    421,097.78x = 158,098,855,916.67
  5. Step 5: Solve for x
    x = 158,098,855,916.67/421,097.78
  6. Step 6: Final answer
    x = 375,444.52

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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.