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Finding the Fourth Proportional to 378,010.20, 566,359.20 and 354,390.60

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Solution

The fourth proportional to 378,010.20, 566,359.20 and 354,390.60 is: 530,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,010.20 : 566,359.20 = 354,390.60 : x
  2. Step 2: Convert to fraction form
    378,010.20/566,359.20 = 354,390.60/x
  3. Step 3: Cross multiply
    378,010.20x = 566,359.20 × 354,390.60
  4. Step 4: Simplify right side
    378,010.20x = 200,712,376,703.52
  5. Step 5: Solve for x
    x = 200,712,376,703.52/378,010.20
  6. Step 6: Final answer
    x = 530,970.80

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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.