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Finding the Fourth Proportional to 378,001.90, 529,902.50 and 378,001.90

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Solution

The fourth proportional to 378,001.90, 529,902.50 and 378,001.90 is: 529,902.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,001.90 : 529,902.50 = 378,001.90 : x
  2. Step 2: Convert to fraction form
    378,001.90/529,902.50 = 378,001.90/x
  3. Step 3: Cross multiply
    378,001.90x = 529,902.50 × 378,001.90
  4. Step 4: Simplify right side
    378,001.90x = 200,304,151,814.75
  5. Step 5: Solve for x
    x = 200,304,151,814.75/378,001.90
  6. Step 6: Final answer
    x = 529,902.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.