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Finding the Fourth Proportional to 378,003.20, 567,004.80 and 228,412.40

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Solution

The fourth proportional to 378,003.20, 567,004.80 and 228,412.40 is: 342,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,003.20 : 567,004.80 = 228,412.40 : x
  2. Step 2: Convert to fraction form
    378,003.20/567,004.80 = 228,412.40/x
  3. Step 3: Cross multiply
    378,003.20x = 567,004.80 × 228,412.40
  4. Step 4: Simplify right side
    378,003.20x = 129,510,927,179.52
  5. Step 5: Solve for x
    x = 129,510,927,179.52/378,003.20
  6. Step 6: Final answer
    x = 342,618.60

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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.