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Finding the Fourth Proportional to 226,728.60, 340,092.90 and 215,323.80

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Solution

The fourth proportional to 226,728.60, 340,092.90 and 215,323.80 is: 322,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,728.60 : 340,092.90 = 215,323.80 : x
  2. Step 2: Convert to fraction form
    226,728.60/340,092.90 = 215,323.80/x
  3. Step 3: Cross multiply
    226,728.60x = 340,092.90 × 215,323.80
  4. Step 4: Simplify right side
    226,728.60x = 73,230,095,581.02
  5. Step 5: Solve for x
    x = 73,230,095,581.02/226,728.60
  6. Step 6: Final answer
    x = 322,985.70

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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.