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Finding the Fourth Proportional to 199,622.40, 299,433.60 and 189,780.90

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Solution

The fourth proportional to 199,622.40, 299,433.60 and 189,780.90 is: 284,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,622.40 : 299,433.60 = 189,780.90 : x
  2. Step 2: Convert to fraction form
    199,622.40/299,433.60 = 189,780.90/x
  3. Step 3: Cross multiply
    199,622.40x = 299,433.60 × 189,780.90
  4. Step 4: Simplify right side
    199,622.40x = 56,826,778,098.24
  5. Step 5: Solve for x
    x = 56,826,778,098.24/199,622.40
  6. Step 6: Final answer
    x = 284,671.35

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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.