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Finding the Fourth Proportional to 401,511.84, 554,085.54 and 231,745.92

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Solution

The fourth proportional to 401,511.84, 554,085.54 and 231,745.92 is: 319,808.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,511.84 : 554,085.54 = 231,745.92 : x
  2. Step 2: Convert to fraction form
    401,511.84/554,085.54 = 231,745.92/x
  3. Step 3: Cross multiply
    401,511.84x = 554,085.54 × 231,745.92
  4. Step 4: Simplify right side
    401,511.84x = 128,407,063,226.00
  5. Step 5: Solve for x
    x = 128,407,063,226.00/401,511.84
  6. Step 6: Final answer
    x = 319,808.91

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1.5x scale

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.