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Finding the Fourth Proportional to 386,497.80, 579,746.70 and 244,780.20

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Solution

The fourth proportional to 386,497.80, 579,746.70 and 244,780.20 is: 367,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,497.80 : 579,746.70 = 244,780.20 : x
  2. Step 2: Convert to fraction form
    386,497.80/579,746.70 = 244,780.20/x
  3. Step 3: Cross multiply
    386,497.80x = 579,746.70 × 244,780.20
  4. Step 4: Simplify right side
    386,497.80x = 141,910,513,175.34
  5. Step 5: Solve for x
    x = 141,910,513,175.34/386,497.80
  6. Step 6: Final answer
    x = 367,170.30

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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.