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Finding the Fourth Proportional to 518,754.42, 715,936.14 and 304,074.86

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Solution

The fourth proportional to 518,754.42, 715,936.14 and 304,074.86 is: 419,655.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,754.42 : 715,936.14 = 304,074.86 : x
  2. Step 2: Convert to fraction form
    518,754.42/715,936.14 = 304,074.86/x
  3. Step 3: Cross multiply
    518,754.42x = 715,936.14 × 304,074.86
  4. Step 4: Simplify right side
    518,754.42x = 217,698,177,959.76
  5. Step 5: Solve for x
    x = 217,698,177,959.76/518,754.42
  6. Step 6: Final answer
    x = 419,655.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.