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Finding the Fourth Proportional to 189,230.49, 284,042.57 and 139,366.89

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Solution

The fourth proportional to 189,230.49, 284,042.57 and 139,366.89 is: 209,195.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,230.49 : 284,042.57 = 139,366.89 : x
  2. Step 2: Convert to fraction form
    189,230.49/284,042.57 = 139,366.89/x
  3. Step 3: Cross multiply
    189,230.49x = 284,042.57 × 139,366.89
  4. Step 4: Simplify right side
    189,230.49x = 39,586,128,911.67
  5. Step 5: Solve for x
    x = 39,586,128,911.67/189,230.49
  6. Step 6: Final answer
    x = 209,195.30

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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.