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Finding the Fourth Proportional to 378,060.30, 567,090.45 and 141,390.45

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Solution

The fourth proportional to 378,060.30, 567,090.45 and 141,390.45 is: 212,085.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,060.30 : 567,090.45 = 141,390.45 : x
  2. Step 2: Convert to fraction form
    378,060.30/567,090.45 = 141,390.45/x
  3. Step 3: Cross multiply
    378,060.30x = 567,090.45 × 141,390.45
  4. Step 4: Simplify right side
    378,060.30x = 80,181,173,916.20
  5. Step 5: Solve for x
    x = 80,181,173,916.20/378,060.30
  6. Step 6: Final answer
    x = 212,085.68

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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.