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Finding the Fourth Proportional to 208,536.52, 312,756.80 and 124,320.46

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Solution

The fourth proportional to 208,536.52, 312,756.80 and 124,320.46 is: 186,452.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,536.52 : 312,756.80 = 124,320.46 : x
  2. Step 2: Convert to fraction form
    208,536.52/312,756.80 = 124,320.46/x
  3. Step 3: Cross multiply
    208,536.52x = 312,756.80 × 124,320.46
  4. Step 4: Simplify right side
    208,536.52x = 38,882,069,244.13
  5. Step 5: Solve for x
    x = 38,882,069,244.13/208,536.52
  6. Step 6: Final answer
    x = 186,452.09

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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.