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Finding the Fourth Proportional to 220,191.40, 308,967.80 and 220,191.40

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Solution

The fourth proportional to 220,191.40, 308,967.80 and 220,191.40 is: 308,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,191.40 : 308,967.80 = 220,191.40 : x
  2. Step 2: Convert to fraction form
    220,191.40/308,967.80 = 220,191.40/x
  3. Step 3: Cross multiply
    220,191.40x = 308,967.80 × 220,191.40
  4. Step 4: Simplify right side
    220,191.40x = 68,032,052,436.92
  5. Step 5: Solve for x
    x = 68,032,052,436.92/220,191.40
  6. Step 6: Final answer
    x = 308,967.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.