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Finding the Fourth Proportional to 397,685.10, 548,624.10 and 236,448.51

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Solution

The fourth proportional to 397,685.10, 548,624.10 and 236,448.51 is: 326,191.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,685.10 : 548,624.10 = 236,448.51 : x
  2. Step 2: Convert to fraction form
    397,685.10/548,624.10 = 236,448.51/x
  3. Step 3: Cross multiply
    397,685.10x = 548,624.10 × 236,448.51
  4. Step 4: Simplify right side
    397,685.10x = 129,721,350,995.09
  5. Step 5: Solve for x
    x = 129,721,350,995.09/397,685.10
  6. Step 6: Final answer
    x = 326,191.13

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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.