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Finding the Fourth Proportional to 199,612.58, 299,575.28 and 139,248.42

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Solution

The fourth proportional to 199,612.58, 299,575.28 and 139,248.42 is: 208,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,612.58 : 299,575.28 = 139,248.42 : x
  2. Step 2: Convert to fraction form
    199,612.58/299,575.28 = 139,248.42/x
  3. Step 3: Cross multiply
    199,612.58x = 299,575.28 × 139,248.42
  4. Step 4: Simplify right side
    199,612.58x = 41,715,384,411.06
  5. Step 5: Solve for x
    x = 41,715,384,411.06/199,612.58
  6. Step 6: Final answer
    x = 208,981.74

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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.