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Finding the Fourth Proportional to 309,369.38, 426,946.55 and 173,446.92

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Solution

The fourth proportional to 309,369.38, 426,946.55 and 173,446.92 is: 239,366.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,369.38 : 426,946.55 = 173,446.92 : x
  2. Step 2: Convert to fraction form
    309,369.38/426,946.55 = 173,446.92/x
  3. Step 3: Cross multiply
    309,369.38x = 426,946.55 × 173,446.92
  4. Step 4: Simplify right side
    309,369.38x = 74,052,563,234.89
  5. Step 5: Solve for x
    x = 74,052,563,234.89/309,369.38
  6. Step 6: Final answer
    x = 239,366.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.