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Finding the Fourth Proportional to 220,216.95, 303,920.70 and 123,437.25

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Solution

The fourth proportional to 220,216.95, 303,920.70 and 123,437.25 is: 170,355.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,216.95 : 303,920.70 = 123,437.25 : x
  2. Step 2: Convert to fraction form
    220,216.95/303,920.70 = 123,437.25/x
  3. Step 3: Cross multiply
    220,216.95x = 303,920.70 × 123,437.25
  4. Step 4: Simplify right side
    220,216.95x = 37,515,135,426.08
  5. Step 5: Solve for x
    x = 37,515,135,426.08/220,216.95
  6. Step 6: Final answer
    x = 170,355.35

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1.5x scale

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.