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Finding the Fourth Proportional to 269,637.40, 404,456.10 and 145,221.40

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Solution

The fourth proportional to 269,637.40, 404,456.10 and 145,221.40 is: 217,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,637.40 : 404,456.10 = 145,221.40 : x
  2. Step 2: Convert to fraction form
    269,637.40/404,456.10 = 145,221.40/x
  3. Step 3: Cross multiply
    269,637.40x = 404,456.10 × 145,221.40
  4. Step 4: Simplify right side
    269,637.40x = 58,735,681,080.54
  5. Step 5: Solve for x
    x = 58,735,681,080.54/269,637.40
  6. Step 6: Final answer
    x = 217,832.10

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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.