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Finding the Fourth Proportional to 226,720.60, 340,080.90 and 215,315.80

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Solution

The fourth proportional to 226,720.60, 340,080.90 and 215,315.80 is: 322,973.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,720.60 : 340,080.90 = 215,315.80 : x
  2. Step 2: Convert to fraction form
    226,720.60/340,080.90 = 215,315.80/x
  3. Step 3: Cross multiply
    226,720.60x = 340,080.90 × 215,315.80
  4. Step 4: Simplify right side
    226,720.60x = 73,224,791,048.22
  5. Step 5: Solve for x
    x = 73,224,791,048.22/226,720.60
  6. Step 6: Final answer
    x = 322,973.70

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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.