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Finding the Third Proportional to 138,710,908 and 216,008,576

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Solution

The third proportional to 138,710,908 and 216,008,576 is: 336,380,934.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,710,908 : 216,008,576 = 216,008,576 : x
  2. Step 2: Convert to fraction form
    138,710,908/216,008,576 = 216,008,576/x
  3. Step 3: Cross multiply
    138,710,908x = 216,008,576 × 216,008,576
  4. Step 4: Simplify right side
    138,710,908x = 46,659,704,905,547,776
  5. Step 5: Solve for x
    x = 46,659,704,905,547,776/138,710,908
  6. Step 6: Final answer
    x = 336,380,934.84

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.