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Finding the Third Proportional to 291,303 and 439,627.50

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Solution

The third proportional to 291,303 and 439,627.50 is: 663,475.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,303 : 439,627.50 = 439,627.50 : x
  2. Step 2: Convert to fraction form
    291,303/439,627.50 = 439,627.50/x
  3. Step 3: Cross multiply
    291,303x = 439,627.50 × 439,627.50
  4. Step 4: Simplify right side
    291,303x = 193,272,338,756.25
  5. Step 5: Solve for x
    x = 193,272,338,756.25/291,303
  6. Step 6: Final answer
    x = 663,475.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.