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Finding the Fourth Proportional to 455,013.38, 627,918.46 and 253,809.38

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Solution

The fourth proportional to 455,013.38, 627,918.46 and 253,809.38 is: 350,256.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,013.38 : 627,918.46 = 253,809.38 : x
  2. Step 2: Convert to fraction form
    455,013.38/627,918.46 = 253,809.38/x
  3. Step 3: Cross multiply
    455,013.38x = 627,918.46 × 253,809.38
  4. Step 4: Simplify right side
    455,013.38x = 159,371,591,249.04
  5. Step 5: Solve for x
    x = 159,371,591,249.04/455,013.38
  6. Step 6: Final answer
    x = 350,256.94

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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.