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Finding the Fourth Proportional to 208,289, 312,335.58 and 89,886.44

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Solution

The fourth proportional to 208,289, 312,335.58 and 89,886.44 is: 134,787.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,289 : 312,335.58 = 89,886.44 : x
  2. Step 2: Convert to fraction form
    208,289/312,335.58 = 89,886.44/x
  3. Step 3: Cross multiply
    208,289x = 312,335.58 × 89,886.44
  4. Step 4: Simplify right side
    208,289x = 28,074,733,371.54
  5. Step 5: Solve for x
    x = 28,074,733,371.54/208,289
  6. Step 6: Final answer
    x = 134,787.40

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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.