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Finding the Third Proportional to 216,899,061.50 and 330,430,815.75

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Solution

The third proportional to 216,899,061.50 and 330,430,815.75 is: 503,388,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,899,061.50 : 330,430,815.75 = 330,430,815.75 : x
  2. Step 2: Convert to fraction form
    216,899,061.50/330,430,815.75 = 330,430,815.75/x
  3. Step 3: Cross multiply
    216,899,061.50x = 330,430,815.75 × 330,430,815.75
  4. Step 4: Simplify right side
    216,899,061.50x = 109,184,523,997,210,448
  5. Step 5: Solve for x
    x = 109,184,523,997,210,448/216,899,061.50
  6. Step 6: Final answer
    x = 503,388,641.90

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.