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Finding the Fourth Proportional to 205,436.55, 308,187.95 and 63,281.81

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Solution

The fourth proportional to 205,436.55, 308,187.95 and 63,281.81 is: 94,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,436.55 : 308,187.95 = 63,281.81 : x
  2. Step 2: Convert to fraction form
    205,436.55/308,187.95 = 63,281.81/x
  3. Step 3: Cross multiply
    205,436.55x = 308,187.95 × 63,281.81
  4. Step 4: Simplify right side
    205,436.55x = 19,502,689,438.84
  5. Step 5: Solve for x
    x = 19,502,689,438.84/205,436.55
  6. Step 6: Final answer
    x = 94,932.91

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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.