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Finding the Fourth Proportional to 203,207.70, 304,811.55 and 84,878.10

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Solution

The fourth proportional to 203,207.70, 304,811.55 and 84,878.10 is: 127,317.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,207.70 : 304,811.55 = 84,878.10 : x
  2. Step 2: Convert to fraction form
    203,207.70/304,811.55 = 84,878.10/x
  3. Step 3: Cross multiply
    203,207.70x = 304,811.55 × 84,878.10
  4. Step 4: Simplify right side
    203,207.70x = 25,871,825,222.06
  5. Step 5: Solve for x
    x = 25,871,825,222.06/203,207.70
  6. Step 6: Final answer
    x = 127,317.15

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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.