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Finding the Fourth Proportional to 642,892, 964,338 and 248,908

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Solution

The fourth proportional to 642,892, 964,338 and 248,908 is: 373,362

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,892 : 964,338 = 248,908 : x
  2. Step 2: Convert to fraction form
    642,892/964,338 = 248,908/x
  3. Step 3: Cross multiply
    642,892x = 964,338 × 248,908
  4. Step 4: Simplify right side
    642,892x = 240,031,442,904
  5. Step 5: Solve for x
    x = 240,031,442,904/642,892
  6. Step 6: Final answer
    x = 373,362

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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.