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Finding the Fourth Proportional to 468,278.78, 646,224.66 and 253,418.84

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Solution

The fourth proportional to 468,278.78, 646,224.66 and 253,418.84 is: 349,717.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,278.78 : 646,224.66 = 253,418.84 : x
  2. Step 2: Convert to fraction form
    468,278.78/646,224.66 = 253,418.84/x
  3. Step 3: Cross multiply
    468,278.78x = 646,224.66 × 253,418.84
  4. Step 4: Simplify right side
    468,278.78x = 163,765,503,716.59
  5. Step 5: Solve for x
    x = 163,765,503,716.59/468,278.78
  6. Step 6: Final answer
    x = 349,717.97

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1.5x scale

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.