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Finding the Third Proportional to 187,616,143 and 290,857,272

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Solution

The third proportional to 187,616,143 and 290,857,272 is: 450,909,774.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,616,143 : 290,857,272 = 290,857,272 : x
  2. Step 2: Convert to fraction form
    187,616,143/290,857,272 = 290,857,272/x
  3. Step 3: Cross multiply
    187,616,143x = 290,857,272 × 290,857,272
  4. Step 4: Simplify right side
    187,616,143x = 84,597,952,675,281,984
  5. Step 5: Solve for x
    x = 84,597,952,675,281,984/187,616,143
  6. Step 6: Final answer
    x = 450,909,774.19

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