Home / 318,592.40-477,904.36-90,921.58

Finding the Fourth Proportional to 318,592.40, 477,904.36 and 90,921.58

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Solution

The fourth proportional to 318,592.40, 477,904.36 and 90,921.58 is: 136,386.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,592.40 : 477,904.36 = 90,921.58 : x
  2. Step 2: Convert to fraction form
    318,592.40/477,904.36 = 90,921.58/x
  3. Step 3: Cross multiply
    318,592.40x = 477,904.36 × 90,921.58
  4. Step 4: Simplify right side
    318,592.40x = 43,451,818,078.02
  5. Step 5: Solve for x
    x = 43,451,818,078.02/318,592.40
  6. Step 6: Final answer
    x = 136,386.86

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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.