Home / 289,943.60-434,811.20-100,352.57

Finding the Fourth Proportional to 289,943.60, 434,811.20 and 100,352.57

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Solution

The fourth proportional to 289,943.60, 434,811.20 and 100,352.57 is: 150,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,943.60 : 434,811.20 = 100,352.57 : x
  2. Step 2: Convert to fraction form
    289,943.60/434,811.20 = 100,352.57/x
  3. Step 3: Cross multiply
    289,943.60x = 434,811.20 × 100,352.57
  4. Step 4: Simplify right side
    289,943.60x = 43,634,418,708.97
  5. Step 5: Solve for x
    x = 43,634,418,708.97/289,943.60
  6. Step 6: Final answer
    x = 150,492.78

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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.