Home / 393,865.34-543,531.40-215,017.34

Finding the Fourth Proportional to 393,865.34, 543,531.40 and 215,017.34

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Solution

The fourth proportional to 393,865.34, 543,531.40 and 215,017.34 is: 296,722.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,865.34 : 543,531.40 = 215,017.34 : x
  2. Step 2: Convert to fraction form
    393,865.34/543,531.40 = 215,017.34/x
  3. Step 3: Cross multiply
    393,865.34x = 543,531.40 × 215,017.34
  4. Step 4: Simplify right side
    393,865.34x = 116,868,672,579.28
  5. Step 5: Solve for x
    x = 116,868,672,579.28/393,865.34
  6. Step 6: Final answer
    x = 296,722.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.