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Finding the Fourth Proportional to 401,889.54, 554,355.29 and 238,430.33

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Solution

The fourth proportional to 401,889.54, 554,355.29 and 238,430.33 is: 328,884.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,889.54 : 554,355.29 = 238,430.33 : x
  2. Step 2: Convert to fraction form
    401,889.54/554,355.29 = 238,430.33/x
  3. Step 3: Cross multiply
    401,889.54x = 554,355.29 × 238,430.33
  4. Step 4: Simplify right side
    401,889.54x = 132,175,110,768.02
  5. Step 5: Solve for x
    x = 132,175,110,768.02/401,889.54
  6. Step 6: Final answer
    x = 328,884.18

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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.