Home / 289,949.08-434,420.10-156,920.92

Finding the Fourth Proportional to 289,949.08, 434,420.10 and 156,920.92

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Solution

The fourth proportional to 289,949.08, 434,420.10 and 156,920.92 is: 235,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,949.08 : 434,420.10 = 156,920.92 : x
  2. Step 2: Convert to fraction form
    289,949.08/434,420.10 = 156,920.92/x
  3. Step 3: Cross multiply
    289,949.08x = 434,420.10 × 156,920.92
  4. Step 4: Simplify right side
    289,949.08x = 68,169,601,758.49
  5. Step 5: Solve for x
    x = 68,169,601,758.49/289,949.08
  6. Step 6: Final answer
    x = 235,108.87

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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.