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Finding the Fourth Proportional to 315,357.21, 473,098.13 and 115,679.45

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Solution

The fourth proportional to 315,357.21, 473,098.13 and 115,679.45 is: 173,542.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,357.21 : 473,098.13 = 115,679.45 : x
  2. Step 2: Convert to fraction form
    315,357.21/473,098.13 = 115,679.45/x
  3. Step 3: Cross multiply
    315,357.21x = 473,098.13 × 115,679.45
  4. Step 4: Simplify right side
    315,357.21x = 54,727,731,474.43
  5. Step 5: Solve for x
    x = 54,727,731,474.43/315,357.21
  6. Step 6: Final answer
    x = 173,542.03

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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.