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Finding the Third Proportional to 213,779,212.50 and 330,486,039

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Solution

The third proportional to 213,779,212.50 and 330,486,039 is: 510,905,717.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,779,212.50 : 330,486,039 = 330,486,039 : x
  2. Step 2: Convert to fraction form
    213,779,212.50/330,486,039 = 330,486,039/x
  3. Step 3: Cross multiply
    213,779,212.50x = 330,486,039 × 330,486,039
  4. Step 4: Simplify right side
    213,779,212.50x = 109,221,021,973,909,520
  5. Step 5: Solve for x
    x = 109,221,021,973,909,520/213,779,212.50
  6. Step 6: Final answer
    x = 510,905,717.62

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.