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Finding the Fourth Proportional to 302,812.78, 417,891.10 and 173,774.87

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Solution

The fourth proportional to 302,812.78, 417,891.10 and 173,774.87 is: 239,814.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,812.78 : 417,891.10 = 173,774.87 : x
  2. Step 2: Convert to fraction form
    302,812.78/417,891.10 = 173,774.87/x
  3. Step 3: Cross multiply
    302,812.78x = 417,891.10 × 173,774.87
  4. Step 4: Simplify right side
    302,812.78x = 72,618,970,945.68
  5. Step 5: Solve for x
    x = 72,618,970,945.68/302,812.78
  6. Step 6: Final answer
    x = 239,814.75

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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.