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Finding the Fourth Proportional to 368,277.95, 508,147.36 and 215,286.57

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Solution

The fourth proportional to 368,277.95, 508,147.36 and 215,286.57 is: 297,050.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,277.95 : 508,147.36 = 215,286.57 : x
  2. Step 2: Convert to fraction form
    368,277.95/508,147.36 = 215,286.57/x
  3. Step 3: Cross multiply
    368,277.95x = 508,147.36 × 215,286.57
  4. Step 4: Simplify right side
    368,277.95x = 109,397,301,650.74
  5. Step 5: Solve for x
    x = 109,397,301,650.74/368,277.95
  6. Step 6: Final answer
    x = 297,050.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.