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Finding the Fourth Proportional to 542,991.90, 814,483.80 and 163,911.90

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Solution

The fourth proportional to 542,991.90, 814,483.80 and 163,911.90 is: 245,866.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,991.90 : 814,483.80 = 163,911.90 : x
  2. Step 2: Convert to fraction form
    542,991.90/814,483.80 = 163,911.90/x
  3. Step 3: Cross multiply
    542,991.90x = 814,483.80 × 163,911.90
  4. Step 4: Simplify right side
    542,991.90x = 133,503,587,177.22
  5. Step 5: Solve for x
    x = 133,503,587,177.22/542,991.90
  6. Step 6: Final answer
    x = 245,866.63

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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.