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Finding the Fourth Proportional to 482,260.64, 665,368.19 and 278,284.78

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Solution

The fourth proportional to 482,260.64, 665,368.19 and 278,284.78 is: 383,945.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,260.64 : 665,368.19 = 278,284.78 : x
  2. Step 2: Convert to fraction form
    482,260.64/665,368.19 = 278,284.78/x
  3. Step 3: Cross multiply
    482,260.64x = 665,368.19 × 278,284.78
  4. Step 4: Simplify right side
    482,260.64x = 185,161,840,857.00
  5. Step 5: Solve for x
    x = 185,161,840,857.00/482,260.64
  6. Step 6: Final answer
    x = 383,945.58

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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.