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Finding the Fourth Proportional to 349,691.32, 524,536.56 and 139,476.88

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Solution

The fourth proportional to 349,691.32, 524,536.56 and 139,476.88 is: 209,215.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,691.32 : 524,536.56 = 139,476.88 : x
  2. Step 2: Convert to fraction form
    349,691.32/524,536.56 = 139,476.88/x
  3. Step 3: Cross multiply
    349,691.32x = 524,536.56 × 139,476.88
  4. Step 4: Simplify right side
    349,691.32x = 73,160,722,834.73
  5. Step 5: Solve for x
    x = 73,160,722,834.73/349,691.32
  6. Step 6: Final answer
    x = 209,215.15

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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.