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Finding the Fourth Proportional to 149,456.20, 209,394.20 and 149,456.20

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Solution

The fourth proportional to 149,456.20, 209,394.20 and 149,456.20 is: 209,394.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,456.20 : 209,394.20 = 149,456.20 : x
  2. Step 2: Convert to fraction form
    149,456.20/209,394.20 = 149,456.20/x
  3. Step 3: Cross multiply
    149,456.20x = 209,394.20 × 149,456.20
  4. Step 4: Simplify right side
    149,456.20x = 31,295,261,434.04
  5. Step 5: Solve for x
    x = 31,295,261,434.04/149,456.20
  6. Step 6: Final answer
    x = 209,394.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.