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Finding the Fourth Proportional to 314,961.80, 472,485.90 and 115,233.80

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Solution

The fourth proportional to 314,961.80, 472,485.90 and 115,233.80 is: 172,866.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,961.80 : 472,485.90 = 115,233.80 : x
  2. Step 2: Convert to fraction form
    314,961.80/472,485.90 = 115,233.80/x
  3. Step 3: Cross multiply
    314,961.80x = 472,485.90 × 115,233.80
  4. Step 4: Simplify right side
    314,961.80x = 54,446,345,703.42
  5. Step 5: Solve for x
    x = 54,446,345,703.42/314,961.80
  6. Step 6: Final answer
    x = 172,866.51

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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.