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Finding the Third Proportional to 318,598.50 and 488,955

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Solution

The third proportional to 318,598.50 and 488,955 is: 750,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,598.50 : 488,955 = 488,955 : x
  2. Step 2: Convert to fraction form
    318,598.50/488,955 = 488,955/x
  3. Step 3: Cross multiply
    318,598.50x = 488,955 × 488,955
  4. Step 4: Simplify right side
    318,598.50x = 239,076,992,025
  5. Step 5: Solve for x
    x = 239,076,992,025/318,598.50
  6. Step 6: Final answer
    x = 750,402.13

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.