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Finding the Fourth Proportional to 355,578.61, 490,603.92 and 202,613.53

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Solution

The fourth proportional to 355,578.61, 490,603.92 and 202,613.53 is: 279,552.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,578.61 : 490,603.92 = 202,613.53 : x
  2. Step 2: Convert to fraction form
    355,578.61/490,603.92 = 202,613.53/x
  3. Step 3: Cross multiply
    355,578.61x = 490,603.92 × 202,613.53
  4. Step 4: Simplify right side
    355,578.61x = 99,402,988,596.95
  5. Step 5: Solve for x
    x = 99,402,988,596.95/355,578.61
  6. Step 6: Final answer
    x = 279,552.78

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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.