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Finding the Fourth Proportional to 401,792.82, 554,437.38 and 238,421.11

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Solution

The fourth proportional to 401,792.82, 554,437.38 and 238,421.11 is: 328,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,792.82 : 554,437.38 = 238,421.11 : x
  2. Step 2: Convert to fraction form
    401,792.82/554,437.38 = 238,421.11/x
  3. Step 3: Cross multiply
    401,792.82x = 554,437.38 × 238,421.11
  4. Step 4: Simplify right side
    401,792.82x = 132,189,575,565.09
  5. Step 5: Solve for x
    x = 132,189,575,565.09/401,792.82
  6. Step 6: Final answer
    x = 328,999.35

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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.