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Finding the Third Proportional to 251,952,985.69 and 391,194,747.28

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Solution

The third proportional to 251,952,985.69 and 391,194,747.28 is: 607,388,437.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,952,985.69 : 391,194,747.28 = 391,194,747.28 : x
  2. Step 2: Convert to fraction form
    251,952,985.69/391,194,747.28 = 391,194,747.28/x
  3. Step 3: Cross multiply
    251,952,985.69x = 391,194,747.28 × 391,194,747.28
  4. Step 4: Simplify right side
    251,952,985.69x = 153,033,330,300,441,056
  5. Step 5: Solve for x
    x = 153,033,330,300,441,056/251,952,985.69
  6. Step 6: Final answer
    x = 607,388,437.50

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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.