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Finding the Third Proportional to 358,308 and 517,960

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Solution

The third proportional to 358,308 and 517,960 is: 748,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,308 : 517,960 = 517,960 : x
  2. Step 2: Convert to fraction form
    358,308/517,960 = 517,960/x
  3. Step 3: Cross multiply
    358,308x = 517,960 × 517,960
  4. Step 4: Simplify right side
    358,308x = 268,282,561,600
  5. Step 5: Solve for x
    x = 268,282,561,600/358,308
  6. Step 6: Final answer
    x = 748,748.46

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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.