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Finding the Fourth Proportional to 463,830.20, 640,392.72 and 356,207.12

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Solution

The fourth proportional to 463,830.20, 640,392.72 and 356,207.12 is: 491,801.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,830.20 : 640,392.72 = 356,207.12 : x
  2. Step 2: Convert to fraction form
    463,830.20/640,392.72 = 356,207.12/x
  3. Step 3: Cross multiply
    463,830.20x = 640,392.72 × 356,207.12
  4. Step 4: Simplify right side
    463,830.20x = 228,112,446,460.17
  5. Step 5: Solve for x
    x = 228,112,446,460.17/463,830.20
  6. Step 6: Final answer
    x = 491,801.63

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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.