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Finding the Fourth Proportional to 316,521.73, 474,783.45 and 79,864.39

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Solution

The fourth proportional to 316,521.73, 474,783.45 and 79,864.39 is: 119,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,521.73 : 474,783.45 = 79,864.39 : x
  2. Step 2: Convert to fraction form
    316,521.73/474,783.45 = 79,864.39/x
  3. Step 3: Cross multiply
    316,521.73x = 474,783.45 × 79,864.39
  4. Step 4: Simplify right side
    316,521.73x = 37,918,290,616.35
  5. Step 5: Solve for x
    x = 37,918,290,616.35/316,521.73
  6. Step 6: Final answer
    x = 119,796.80

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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.