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Finding the Fourth Proportional to 355,315.20, 532,195.20 and 308,659.20

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Solution

The fourth proportional to 355,315.20, 532,195.20 and 308,659.20 is: 462,313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,315.20 : 532,195.20 = 308,659.20 : x
  2. Step 2: Convert to fraction form
    355,315.20/532,195.20 = 308,659.20/x
  3. Step 3: Cross multiply
    355,315.20x = 532,195.20 × 308,659.20
  4. Step 4: Simplify right side
    355,315.20x = 164,266,944,675.84
  5. Step 5: Solve for x
    x = 164,266,944,675.84/355,315.20
  6. Step 6: Final answer
    x = 462,313.31

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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.