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Finding the Fourth Proportional to 203,256.91, 304,762.24 and 90,916.19

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Solution

The fourth proportional to 203,256.91, 304,762.24 and 90,916.19 is: 136,319.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,256.91 : 304,762.24 = 90,916.19 : x
  2. Step 2: Convert to fraction form
    203,256.91/304,762.24 = 90,916.19/x
  3. Step 3: Cross multiply
    203,256.91x = 304,762.24 × 90,916.19
  4. Step 4: Simplify right side
    203,256.91x = 27,707,821,716.67
  5. Step 5: Solve for x
    x = 27,707,821,716.67/203,256.91
  6. Step 6: Final answer
    x = 136,319.21

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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.