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Finding the Fourth Proportional to 308,676.06, 426,039.48 and 187,856.19

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Solution

The fourth proportional to 308,676.06, 426,039.48 and 187,856.19 is: 259,282.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,676.06 : 426,039.48 = 187,856.19 : x
  2. Step 2: Convert to fraction form
    308,676.06/426,039.48 = 187,856.19/x
  3. Step 3: Cross multiply
    308,676.06x = 426,039.48 × 187,856.19
  4. Step 4: Simplify right side
    308,676.06x = 80,034,153,502.38
  5. Step 5: Solve for x
    x = 80,034,153,502.38/308,676.06
  6. Step 6: Final answer
    x = 259,282.02

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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.