Home / 370,272.45-555,408.72-89,789.70

Finding the Fourth Proportional to 370,272.45, 555,408.72 and 89,789.70

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Solution

The fourth proportional to 370,272.45, 555,408.72 and 89,789.70 is: 134,684.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,272.45 : 555,408.72 = 89,789.70 : x
  2. Step 2: Convert to fraction form
    370,272.45/555,408.72 = 89,789.70/x
  3. Step 3: Cross multiply
    370,272.45x = 555,408.72 × 89,789.70
  4. Step 4: Simplify right side
    370,272.45x = 49,869,982,346.18
  5. Step 5: Solve for x
    x = 49,869,982,346.18/370,272.45
  6. Step 6: Final answer
    x = 134,684.56

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1.5x scale

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.