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Finding the Fourth Proportional to 376,461.52, 519,455.60 and 215,290.64

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Solution

The fourth proportional to 376,461.52, 519,455.60 and 215,290.64 is: 297,066.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,461.52 : 519,455.60 = 215,290.64 : x
  2. Step 2: Convert to fraction form
    376,461.52/519,455.60 = 215,290.64/x
  3. Step 3: Cross multiply
    376,461.52x = 519,455.60 × 215,290.64
  4. Step 4: Simplify right side
    376,461.52x = 111,833,928,575.58
  5. Step 5: Solve for x
    x = 111,833,928,575.58/376,461.52
  6. Step 6: Final answer
    x = 297,066.03

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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.