Home / 289,922.40-434,905.20-102,909.60

Finding the Fourth Proportional to 289,922.40, 434,905.20 and 102,909.60

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Solution

The fourth proportional to 289,922.40, 434,905.20 and 102,909.60 is: 154,372.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,922.40 : 434,905.20 = 102,909.60 : x
  2. Step 2: Convert to fraction form
    289,922.40/434,905.20 = 102,909.60/x
  3. Step 3: Cross multiply
    289,922.40x = 434,905.20 × 102,909.60
  4. Step 4: Simplify right side
    289,922.40x = 44,755,920,169.92
  5. Step 5: Solve for x
    x = 44,755,920,169.92/289,922.40
  6. Step 6: Final answer
    x = 154,372.07

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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.