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Finding the Fourth Proportional to 503,648.90, 695,035.59 and 274,206.21

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Solution

The fourth proportional to 503,648.90, 695,035.59 and 274,206.21 is: 378,404.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,648.90 : 695,035.59 = 274,206.21 : x
  2. Step 2: Convert to fraction form
    503,648.90/695,035.59 = 274,206.21/x
  3. Step 3: Cross multiply
    503,648.90x = 695,035.59 × 274,206.21
  4. Step 4: Simplify right side
    503,648.90x = 190,583,072,856.77
  5. Step 5: Solve for x
    x = 190,583,072,856.77/503,648.90
  6. Step 6: Final answer
    x = 378,404.62

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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.