Home / 203,265.02-304,839.91-128,272.82

Finding the Fourth Proportional to 203,265.02, 304,839.91 and 128,272.82

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Solution

The fourth proportional to 203,265.02, 304,839.91 and 128,272.82 is: 192,372.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,265.02 : 304,839.91 = 128,272.82 : x
  2. Step 2: Convert to fraction form
    203,265.02/304,839.91 = 128,272.82/x
  3. Step 3: Cross multiply
    203,265.02x = 304,839.91 × 128,272.82
  4. Step 4: Simplify right side
    203,265.02x = 39,102,674,904.25
  5. Step 5: Solve for x
    x = 39,102,674,904.25/203,265.02
  6. Step 6: Final answer
    x = 192,372.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.