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Finding the Fourth Proportional to 355,266.20, 532,121.70 and 308,610.20

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Solution

The fourth proportional to 355,266.20, 532,121.70 and 308,610.20 is: 462,239.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,266.20 : 532,121.70 = 308,610.20 : x
  2. Step 2: Convert to fraction form
    355,266.20/532,121.70 = 308,610.20/x
  3. Step 3: Cross multiply
    355,266.20x = 532,121.70 × 308,610.20
  4. Step 4: Simplify right side
    355,266.20x = 164,218,184,261.34
  5. Step 5: Solve for x
    x = 164,218,184,261.34/355,266.20
  6. Step 6: Final answer
    x = 462,239.82

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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.