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Finding the Fourth Proportional to 605,105.76, 908,142.48 and 272,707.68

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Solution

The fourth proportional to 605,105.76, 908,142.48 and 272,707.68 is: 409,279.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,105.76 : 908,142.48 = 272,707.68 : x
  2. Step 2: Convert to fraction form
    605,105.76/908,142.48 = 272,707.68/x
  3. Step 3: Cross multiply
    605,105.76x = 908,142.48 × 272,707.68
  4. Step 4: Simplify right side
    605,105.76x = 247,657,428,830.25
  5. Step 5: Solve for x
    x = 247,657,428,830.25/605,105.76
  6. Step 6: Final answer
    x = 409,279.58

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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.