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Finding the Fourth Proportional to 225,354.60, 338,027.90 and 90,453

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Solution

The fourth proportional to 225,354.60, 338,027.90 and 90,453 is: 135,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,354.60 : 338,027.90 = 90,453 : x
  2. Step 2: Convert to fraction form
    225,354.60/338,027.90 = 90,453/x
  3. Step 3: Cross multiply
    225,354.60x = 338,027.90 × 90,453
  4. Step 4: Simplify right side
    225,354.60x = 30,575,637,638.70
  5. Step 5: Solve for x
    x = 30,575,637,638.70/225,354.60
  6. Step 6: Final answer
    x = 135,677.89

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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.