Home / 318,593.40-477,905.86-90,922.58

Finding the Fourth Proportional to 318,593.40, 477,905.86 and 90,922.58

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Solution

The fourth proportional to 318,593.40, 477,905.86 and 90,922.58 is: 136,388.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,593.40 : 477,905.86 = 90,922.58 : x
  2. Step 2: Convert to fraction form
    318,593.40/477,905.86 = 90,922.58/x
  3. Step 3: Cross multiply
    318,593.40x = 477,905.86 × 90,922.58
  4. Step 4: Simplify right side
    318,593.40x = 43,452,433,788.32
  5. Step 5: Solve for x
    x = 43,452,433,788.32/318,593.40
  6. Step 6: Final answer
    x = 136,388.37

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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.