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Finding the Fourth Proportional to 403,354.20, 605,031.30 and 268,051.80

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Solution

The fourth proportional to 403,354.20, 605,031.30 and 268,051.80 is: 402,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,354.20 : 605,031.30 = 268,051.80 : x
  2. Step 2: Convert to fraction form
    403,354.20/605,031.30 = 268,051.80/x
  3. Step 3: Cross multiply
    403,354.20x = 605,031.30 × 268,051.80
  4. Step 4: Simplify right side
    403,354.20x = 162,179,729,021.34
  5. Step 5: Solve for x
    x = 162,179,729,021.34/403,354.20
  6. Step 6: Final answer
    x = 402,077.70

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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.