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Finding the Fourth Proportional to 378,037.70, 567,056.55 and 141,331.40

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Solution

The fourth proportional to 378,037.70, 567,056.55 and 141,331.40 is: 211,997.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,037.70 : 567,056.55 = 141,331.40 : x
  2. Step 2: Convert to fraction form
    378,037.70/567,056.55 = 141,331.40/x
  3. Step 3: Cross multiply
    378,037.70x = 567,056.55 × 141,331.40
  4. Step 4: Simplify right side
    378,037.70x = 80,142,896,090.67
  5. Step 5: Solve for x
    x = 80,142,896,090.67/378,037.70
  6. Step 6: Final answer
    x = 211,997.10

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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.