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Finding the Fourth Proportional to 191,814, 287,721 and 60,486

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Solution

The fourth proportional to 191,814, 287,721 and 60,486 is: 90,729

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,814 : 287,721 = 60,486 : x
  2. Step 2: Convert to fraction form
    191,814/287,721 = 60,486/x
  3. Step 3: Cross multiply
    191,814x = 287,721 × 60,486
  4. Step 4: Simplify right side
    191,814x = 17,403,092,406
  5. Step 5: Solve for x
    x = 17,403,092,406/191,814
  6. Step 6: Final answer
    x = 90,729

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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.