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Finding the Fourth Proportional to 228,220.80, 342,331.20 and 213,349.20

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Solution

The fourth proportional to 228,220.80, 342,331.20 and 213,349.20 is: 320,023.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,220.80 : 342,331.20 = 213,349.20 : x
  2. Step 2: Convert to fraction form
    228,220.80/342,331.20 = 213,349.20/x
  3. Step 3: Cross multiply
    228,220.80x = 342,331.20 × 213,349.20
  4. Step 4: Simplify right side
    228,220.80x = 73,036,087,655.04
  5. Step 5: Solve for x
    x = 73,036,087,655.04/228,220.80
  6. Step 6: Final answer
    x = 320,023.80

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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.