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Finding the Fourth Proportional to 256,950.14, 354,356.88 and 220,640.18

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Solution

The fourth proportional to 256,950.14, 354,356.88 and 220,640.18 is: 304,282.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,950.14 : 354,356.88 = 220,640.18 : x
  2. Step 2: Convert to fraction form
    256,950.14/354,356.88 = 220,640.18/x
  3. Step 3: Cross multiply
    256,950.14x = 354,356.88 × 220,640.18
  4. Step 4: Simplify right side
    256,950.14x = 78,185,364,015.65
  5. Step 5: Solve for x
    x = 78,185,364,015.65/256,950.14
  6. Step 6: Final answer
    x = 304,282.25

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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.