Home / 401,456.22-554,008.74-231,690.36

Finding the Fourth Proportional to 401,456.22, 554,008.74 and 231,690.36

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Solution

The fourth proportional to 401,456.22, 554,008.74 and 231,690.36 is: 319,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,456.22 : 554,008.74 = 231,690.36 : x
  2. Step 2: Convert to fraction form
    401,456.22/554,008.74 = 231,690.36/x
  3. Step 3: Cross multiply
    401,456.22x = 554,008.74 × 231,690.36
  4. Step 4: Simplify right side
    401,456.22x = 128,358,484,413.75
  5. Step 5: Solve for x
    x = 128,358,484,413.75/401,456.22
  6. Step 6: Final answer
    x = 319,732.21

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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.