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Finding the Fourth Proportional to 515,715.48, 773,610.48 and 215,894.52

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Solution

The fourth proportional to 515,715.48, 773,610.48 and 215,894.52 is: 323,857.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,715.48 : 773,610.48 = 215,894.52 : x
  2. Step 2: Convert to fraction form
    515,715.48/773,610.48 = 215,894.52/x
  3. Step 3: Cross multiply
    515,715.48x = 773,610.48 × 215,894.52
  4. Step 4: Simplify right side
    515,715.48x = 167,018,263,246.57
  5. Step 5: Solve for x
    x = 167,018,263,246.57/515,715.48
  6. Step 6: Final answer
    x = 323,857.38

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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.