Home / 221,115.84-331,570.08-80,776.32

Finding the Fourth Proportional to 221,115.84, 331,570.08 and 80,776.32

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Solution

The fourth proportional to 221,115.84, 331,570.08 and 80,776.32 is: 121,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,115.84 : 331,570.08 = 80,776.32 : x
  2. Step 2: Convert to fraction form
    221,115.84/331,570.08 = 80,776.32/x
  3. Step 3: Cross multiply
    221,115.84x = 331,570.08 × 80,776.32
  4. Step 4: Simplify right side
    221,115.84x = 26,783,010,884.51
  5. Step 5: Solve for x
    x = 26,783,010,884.51/221,115.84
  6. Step 6: Final answer
    x = 121,126.60

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1.5x scale

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.