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Finding the Fourth Proportional to 308,842.12, 426,206.48 and 177,947.44

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Solution

The fourth proportional to 308,842.12, 426,206.48 and 177,947.44 is: 245,569.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,842.12 : 426,206.48 = 177,947.44 : x
  2. Step 2: Convert to fraction form
    308,842.12/426,206.48 = 177,947.44/x
  3. Step 3: Cross multiply
    308,842.12x = 426,206.48 × 177,947.44
  4. Step 4: Simplify right side
    308,842.12x = 75,842,352,027.41
  5. Step 5: Solve for x
    x = 75,842,352,027.41/308,842.12
  6. Step 6: Final answer
    x = 245,569.98

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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.