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Finding the Fourth Proportional to 319,712.58, 479,248.11 and 109,206.54

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Solution

The fourth proportional to 319,712.58, 479,248.11 and 109,206.54 is: 163,700.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,712.58 : 479,248.11 = 109,206.54 : x
  2. Step 2: Convert to fraction form
    319,712.58/479,248.11 = 109,206.54/x
  3. Step 3: Cross multiply
    319,712.58x = 479,248.11 × 109,206.54
  4. Step 4: Simplify right side
    319,712.58x = 52,337,027,894.64
  5. Step 5: Solve for x
    x = 52,337,027,894.64/319,712.58
  6. Step 6: Final answer
    x = 163,700.25

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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.