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Finding the Fourth Proportional to 454,448.80, 681,673.20 and 138,864.70

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Solution

The fourth proportional to 454,448.80, 681,673.20 and 138,864.70 is: 208,297.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,448.80 : 681,673.20 = 138,864.70 : x
  2. Step 2: Convert to fraction form
    454,448.80/681,673.20 = 138,864.70/x
  3. Step 3: Cross multiply
    454,448.80x = 681,673.20 × 138,864.70
  4. Step 4: Simplify right side
    454,448.80x = 94,660,344,416.04
  5. Step 5: Solve for x
    x = 94,660,344,416.04/454,448.80
  6. Step 6: Final answer
    x = 208,297.05

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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.