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Finding the Fourth Proportional to 315,384.80, 473,206.80 and 115,800.80

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Solution

The fourth proportional to 315,384.80, 473,206.80 and 115,800.80 is: 173,748.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,384.80 : 473,206.80 = 115,800.80 : x
  2. Step 2: Convert to fraction form
    315,384.80/473,206.80 = 115,800.80/x
  3. Step 3: Cross multiply
    315,384.80x = 473,206.80 × 115,800.80
  4. Step 4: Simplify right side
    315,384.80x = 54,797,726,005.44
  5. Step 5: Solve for x
    x = 54,797,726,005.44/315,384.80
  6. Step 6: Final answer
    x = 173,748.79

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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.