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Finding the Third Proportional to 215,894,754.50 and 331,638,111.75

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Solution

The third proportional to 215,894,754.50 and 331,638,111.75 is: 509,432,651.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,894,754.50 : 331,638,111.75 = 331,638,111.75 : x
  2. Step 2: Convert to fraction form
    215,894,754.50/331,638,111.75 = 331,638,111.75/x
  3. Step 3: Cross multiply
    215,894,754.50x = 331,638,111.75 × 331,638,111.75
  4. Step 4: Simplify right side
    215,894,754.50x = 109,983,837,165,105,488
  5. Step 5: Solve for x
    x = 109,983,837,165,105,488/215,894,754.50
  6. Step 6: Final answer
    x = 509,432,651.20

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.