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Finding the Fourth Proportional to 149,456.70, 209,394.90 and 149,456.70

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Solution

The fourth proportional to 149,456.70, 209,394.90 and 149,456.70 is: 209,394.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,456.70 : 209,394.90 = 149,456.70 : x
  2. Step 2: Convert to fraction form
    149,456.70/209,394.90 = 149,456.70/x
  3. Step 3: Cross multiply
    149,456.70x = 209,394.90 × 149,456.70
  4. Step 4: Simplify right side
    149,456.70x = 31,295,470,750.83
  5. Step 5: Solve for x
    x = 31,295,470,750.83/149,456.70
  6. Step 6: Final answer
    x = 209,394.90

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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.