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Finding the Fourth Proportional to 274,634, 379,000.68 and 155,402

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Solution

The fourth proportional to 274,634, 379,000.68 and 155,402 is: 214,458.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,634 : 379,000.68 = 155,402 : x
  2. Step 2: Convert to fraction form
    274,634/379,000.68 = 155,402/x
  3. Step 3: Cross multiply
    274,634x = 379,000.68 × 155,402
  4. Step 4: Simplify right side
    274,634x = 58,897,463,673.36
  5. Step 5: Solve for x
    x = 58,897,463,673.36/274,634
  6. Step 6: Final answer
    x = 214,458.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.