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Finding the Fourth Proportional to 543,346.40, 815,015.55 and 164,266.40

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Solution

The fourth proportional to 543,346.40, 815,015.55 and 164,266.40 is: 246,398.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,346.40 : 815,015.55 = 164,266.40 : x
  2. Step 2: Convert to fraction form
    543,346.40/815,015.55 = 164,266.40/x
  3. Step 3: Cross multiply
    543,346.40x = 815,015.55 × 164,266.40
  4. Step 4: Simplify right side
    543,346.40x = 133,879,670,342.52
  5. Step 5: Solve for x
    x = 133,879,670,342.52/543,346.40
  6. Step 6: Final answer
    x = 246,398.38

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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.