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Finding the Fourth Proportional to 401,957.07, 554,679.84 and 238,620.33

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Solution

The fourth proportional to 401,957.07, 554,679.84 and 238,620.33 is: 329,283.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,957.07 : 554,679.84 = 238,620.33 : x
  2. Step 2: Convert to fraction form
    401,957.07/554,679.84 = 238,620.33/x
  3. Step 3: Cross multiply
    401,957.07x = 554,679.84 × 238,620.33
  4. Step 4: Simplify right side
    401,957.07x = 132,357,886,465.15
  5. Step 5: Solve for x
    x = 132,357,886,465.15/401,957.07
  6. Step 6: Final answer
    x = 329,283.64

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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.