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Finding the Fourth Proportional to 403,254.20, 604,881.30 and 261,536.60

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Solution

The fourth proportional to 403,254.20, 604,881.30 and 261,536.60 is: 392,304.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,254.20 : 604,881.30 = 261,536.60 : x
  2. Step 2: Convert to fraction form
    403,254.20/604,881.30 = 261,536.60/x
  3. Step 3: Cross multiply
    403,254.20x = 604,881.30 × 261,536.60
  4. Step 4: Simplify right side
    403,254.20x = 158,198,598,605.58
  5. Step 5: Solve for x
    x = 158,198,598,605.58/403,254.20
  6. Step 6: Final answer
    x = 392,304.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.