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Finding the Fourth Proportional to 269,931.37, 404,855.54 and 90,019.94

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Solution

The fourth proportional to 269,931.37, 404,855.54 and 90,019.94 is: 135,016.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,931.37 : 404,855.54 = 90,019.94 : x
  2. Step 2: Convert to fraction form
    269,931.37/404,855.54 = 90,019.94/x
  3. Step 3: Cross multiply
    269,931.37x = 404,855.54 × 90,019.94
  4. Step 4: Simplify right side
    269,931.37x = 36,445,071,419.47
  5. Step 5: Solve for x
    x = 36,445,071,419.47/269,931.37
  6. Step 6: Final answer
    x = 135,016.07

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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.