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Finding the Fourth Proportional to 203,326.25, 304,866.30 and 90,985.51

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Solution

The fourth proportional to 203,326.25, 304,866.30 and 90,985.51 is: 136,423.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,326.25 : 304,866.30 = 90,985.51 : x
  2. Step 2: Convert to fraction form
    203,326.25/304,866.30 = 90,985.51/x
  3. Step 3: Cross multiply
    203,326.25x = 304,866.30 × 90,985.51
  4. Step 4: Simplify right side
    203,326.25x = 27,738,414,262.98
  5. Step 5: Solve for x
    x = 27,738,414,262.98/203,326.25
  6. Step 6: Final answer
    x = 136,423.18

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1.5x scale

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.