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Finding the Fourth Proportional to 401,751.12, 554,207.22 and 238,312.56

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Solution

The fourth proportional to 401,751.12, 554,207.22 and 238,312.56 is: 328,747.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,751.12 : 554,207.22 = 238,312.56 : x
  2. Step 2: Convert to fraction form
    401,751.12/554,207.22 = 238,312.56/x
  3. Step 3: Cross multiply
    401,751.12x = 554,207.22 × 238,312.56
  4. Step 4: Simplify right side
    401,751.12x = 132,074,541,368.68
  5. Step 5: Solve for x
    x = 132,074,541,368.68/401,751.12
  6. Step 6: Final answer
    x = 328,747.16

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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.