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Finding the Fourth Proportional to 510,101.38, 703,945.29 and 280,661.68

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Solution

The fourth proportional to 510,101.38, 703,945.29 and 280,661.68 is: 387,316.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,101.38 : 703,945.29 = 280,661.68 : x
  2. Step 2: Convert to fraction form
    510,101.38/703,945.29 = 280,661.68/x
  3. Step 3: Cross multiply
    510,101.38x = 703,945.29 × 280,661.68
  4. Step 4: Simplify right side
    510,101.38x = 197,570,467,719.49
  5. Step 5: Solve for x
    x = 197,570,467,719.49/510,101.38
  6. Step 6: Final answer
    x = 387,316.08

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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.