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Finding the Third Proportional to 215,329,378.50 and 472,346,989

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Solution

The third proportional to 215,329,378.50 and 472,346,989 is: 1,036,141,373.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,329,378.50 : 472,346,989 = 472,346,989 : x
  2. Step 2: Convert to fraction form
    215,329,378.50/472,346,989 = 472,346,989/x
  3. Step 3: Cross multiply
    215,329,378.50x = 472,346,989 × 472,346,989
  4. Step 4: Simplify right side
    215,329,378.50x = 223,111,678,017,366,112
  5. Step 5: Solve for x
    x = 223,111,678,017,366,112/215,329,378.50
  6. Step 6: Final answer
    x = 1,036,141,373.61

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.