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Finding the Fourth Proportional to 518,729.49, 778,162.28 and 203,145.39

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Solution

The fourth proportional to 518,729.49, 778,162.28 and 203,145.39 is: 304,744.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,729.49 : 778,162.28 = 203,145.39 : x
  2. Step 2: Convert to fraction form
    518,729.49/778,162.28 = 203,145.39/x
  3. Step 3: Cross multiply
    518,729.49x = 778,162.28 × 203,145.39
  4. Step 4: Simplify right side
    518,729.49x = 158,080,078,838.16
  5. Step 5: Solve for x
    x = 158,080,078,838.16/518,729.49
  6. Step 6: Final answer
    x = 304,744.73

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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.