Home / 401,721.76-554,382.48-231,970.72

Finding the Fourth Proportional to 401,721.76, 554,382.48 and 231,970.72

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Solution

The fourth proportional to 401,721.76, 554,382.48 and 231,970.72 is: 320,123.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,721.76 : 554,382.48 = 231,970.72 : x
  2. Step 2: Convert to fraction form
    401,721.76/554,382.48 = 231,970.72/x
  3. Step 3: Cross multiply
    401,721.76x = 554,382.48 × 231,970.72
  4. Step 4: Simplify right side
    401,721.76x = 128,600,503,040.99
  5. Step 5: Solve for x
    x = 128,600,503,040.99/401,721.76
  6. Step 6: Final answer
    x = 320,123.32

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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.