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Finding the Fourth Proportional to 482,514.84, 665,900.94 and 278,603.40

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Solution

The fourth proportional to 482,514.84, 665,900.94 and 278,603.40 is: 384,490.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,514.84 : 665,900.94 = 278,603.40 : x
  2. Step 2: Convert to fraction form
    482,514.84/665,900.94 = 278,603.40/x
  3. Step 3: Cross multiply
    482,514.84x = 665,900.94 × 278,603.40
  4. Step 4: Simplify right side
    482,514.84x = 185,522,265,947.20
  5. Step 5: Solve for x
    x = 185,522,265,947.20/482,514.84
  6. Step 6: Final answer
    x = 384,490.28

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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.