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Finding the Fourth Proportional to 543,358.40, 815,033.55 and 164,278.40

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Solution

The fourth proportional to 543,358.40, 815,033.55 and 164,278.40 is: 246,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,358.40 : 815,033.55 = 164,278.40 : x
  2. Step 2: Convert to fraction form
    543,358.40/815,033.55 = 164,278.40/x
  3. Step 3: Cross multiply
    543,358.40x = 815,033.55 × 164,278.40
  4. Step 4: Simplify right side
    543,358.40x = 133,892,407,540.32
  5. Step 5: Solve for x
    x = 133,892,407,540.32/543,358.40
  6. Step 6: Final answer
    x = 246,416.38

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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.