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Finding the Fourth Proportional to 302,691.78, 417,717.54 and 166,726.31

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Solution

The fourth proportional to 302,691.78, 417,717.54 and 166,726.31 is: 230,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,691.78 : 417,717.54 = 166,726.31 : x
  2. Step 2: Convert to fraction form
    302,691.78/417,717.54 = 166,726.31/x
  3. Step 3: Cross multiply
    302,691.78x = 417,717.54 × 166,726.31
  4. Step 4: Simplify right side
    302,691.78x = 69,644,501,977.89
  5. Step 5: Solve for x
    x = 69,644,501,977.89/302,691.78
  6. Step 6: Final answer
    x = 230,083.89

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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.