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Finding the Fourth Proportional to 302,357.48, 417,270.55 and 173,317.42

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Solution

The fourth proportional to 302,357.48, 417,270.55 and 173,317.42 is: 239,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,357.48 : 417,270.55 = 173,317.42 : x
  2. Step 2: Convert to fraction form
    302,357.48/417,270.55 = 173,317.42/x
  3. Step 3: Cross multiply
    302,357.48x = 417,270.55 × 173,317.42
  4. Step 4: Simplify right side
    302,357.48x = 72,320,253,081.63
  5. Step 5: Solve for x
    x = 72,320,253,081.63/302,357.48
  6. Step 6: Final answer
    x = 239,187.91

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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.