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Finding the Third Proportional to 358,309 and 517,961.50

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Solution

The third proportional to 358,309 and 517,961.50 is: 748,750.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,309 : 517,961.50 = 517,961.50 : x
  2. Step 2: Convert to fraction form
    358,309/517,961.50 = 517,961.50/x
  3. Step 3: Cross multiply
    358,309x = 517,961.50 × 517,961.50
  4. Step 4: Simplify right side
    358,309x = 268,284,115,482.25
  5. Step 5: Solve for x
    x = 268,284,115,482.25/358,309
  6. Step 6: Final answer
    x = 748,750.70

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.