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Finding the Third Proportional to 145,429,810 and 311,015,009

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Solution

The third proportional to 145,429,810 and 311,015,009 is: 665,134,169.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,429,810 : 311,015,009 = 311,015,009 : x
  2. Step 2: Convert to fraction form
    145,429,810/311,015,009 = 311,015,009/x
  3. Step 3: Cross multiply
    145,429,810x = 311,015,009 × 311,015,009
  4. Step 4: Simplify right side
    145,429,810x = 96,730,335,823,270,080
  5. Step 5: Solve for x
    x = 96,730,335,823,270,080/145,429,810
  6. Step 6: Final answer
    x = 665,134,169.01

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.