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Finding the Fourth Proportional to 485,201.88, 669,637.80 and 294,214.68

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Solution

The fourth proportional to 485,201.88, 669,637.80 and 294,214.68 is: 406,052.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,201.88 : 669,637.80 = 294,214.68 : x
  2. Step 2: Convert to fraction form
    485,201.88/669,637.80 = 294,214.68/x
  3. Step 3: Cross multiply
    485,201.88x = 669,637.80 × 294,214.68
  4. Step 4: Simplify right side
    485,201.88x = 197,017,271,042.90
  5. Step 5: Solve for x
    x = 197,017,271,042.90/485,201.88
  6. Step 6: Final answer
    x = 406,052.16

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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.