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Finding the Fourth Proportional to 422,329.29, 633,427.91 and 138,017.58

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Solution

The fourth proportional to 422,329.29, 633,427.91 and 138,017.58 is: 207,004.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,329.29 : 633,427.91 = 138,017.58 : x
  2. Step 2: Convert to fraction form
    422,329.29/633,427.91 = 138,017.58/x
  3. Step 3: Cross multiply
    422,329.29x = 633,427.91 × 138,017.58
  4. Step 4: Simplify right side
    422,329.29x = 87,424,186,552.57
  5. Step 5: Solve for x
    x = 87,424,186,552.57/422,329.29
  6. Step 6: Final answer
    x = 207,004.79

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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.