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Finding the Third Proportional to 310,557 and 437,215.50

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Solution

The third proportional to 310,557 and 437,215.50 is: 615,530.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,557 : 437,215.50 = 437,215.50 : x
  2. Step 2: Convert to fraction form
    310,557/437,215.50 = 437,215.50/x
  3. Step 3: Cross multiply
    310,557x = 437,215.50 × 437,215.50
  4. Step 4: Simplify right side
    310,557x = 191,157,393,440.25
  5. Step 5: Solve for x
    x = 191,157,393,440.25/310,557
  6. Step 6: Final answer
    x = 615,530.78

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.