Home / 289,377.36-434,190.78-156,231.18

Finding the Fourth Proportional to 289,377.36, 434,190.78 and 156,231.18

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Solution

The fourth proportional to 289,377.36, 434,190.78 and 156,231.18 is: 234,414.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,377.36 : 434,190.78 = 156,231.18 : x
  2. Step 2: Convert to fraction form
    289,377.36/434,190.78 = 156,231.18/x
  3. Step 3: Cross multiply
    289,377.36x = 434,190.78 × 156,231.18
  4. Step 4: Simplify right side
    289,377.36x = 67,834,137,904.52
  5. Step 5: Solve for x
    x = 67,834,137,904.52/289,377.36
  6. Step 6: Final answer
    x = 234,414.12

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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.