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Finding the Fourth Proportional to 213,174.48, 319,760.28 and 55,402.32

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Solution

The fourth proportional to 213,174.48, 319,760.28 and 55,402.32 is: 83,103.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,174.48 : 319,760.28 = 55,402.32 : x
  2. Step 2: Convert to fraction form
    213,174.48/319,760.28 = 55,402.32/x
  3. Step 3: Cross multiply
    213,174.48x = 319,760.28 × 55,402.32
  4. Step 4: Simplify right side
    213,174.48x = 17,715,461,355.85
  5. Step 5: Solve for x
    x = 17,715,461,355.85/213,174.48
  6. Step 6: Final answer
    x = 83,103.11

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1.5x scale

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.