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Finding the Third Proportional to 147,952 and 316,688

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Solution

The third proportional to 147,952 and 316,688 is: 677,863.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,952 : 316,688 = 316,688 : x
  2. Step 2: Convert to fraction form
    147,952/316,688 = 316,688/x
  3. Step 3: Cross multiply
    147,952x = 316,688 × 316,688
  4. Step 4: Simplify right side
    147,952x = 100,291,289,344
  5. Step 5: Solve for x
    x = 100,291,289,344/147,952
  6. Step 6: Final answer
    x = 677,863.69

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.