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Finding the Fourth Proportional to 454,175.40, 680,679.90 and 217,007.40

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Solution

The fourth proportional to 454,175.40, 680,679.90 and 217,007.40 is: 325,232.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,175.40 : 680,679.90 = 217,007.40 : x
  2. Step 2: Convert to fraction form
    454,175.40/680,679.90 = 217,007.40/x
  3. Step 3: Cross multiply
    454,175.40x = 680,679.90 × 217,007.40
  4. Step 4: Simplify right side
    454,175.40x = 147,712,575,331.26
  5. Step 5: Solve for x
    x = 147,712,575,331.26/454,175.40
  6. Step 6: Final answer
    x = 325,232.44

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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.