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Finding the Fourth Proportional to 401,888.42, 554,353.74 and 238,429.19

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Solution

The fourth proportional to 401,888.42, 554,353.74 and 238,429.19 is: 328,882.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,888.42 : 554,353.74 = 238,429.19 : x
  2. Step 2: Convert to fraction form
    401,888.42/554,353.74 = 238,429.19/x
  3. Step 3: Cross multiply
    401,888.42x = 554,353.74 × 238,429.19
  4. Step 4: Simplify right side
    401,888.42x = 132,174,111,469.32
  5. Step 5: Solve for x
    x = 132,174,111,469.32/401,888.42
  6. Step 6: Final answer
    x = 328,882.61

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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.