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Finding the Third Proportional to 145,429,131 and 311,013,654

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Solution

The third proportional to 145,429,131 and 311,013,654 is: 665,131,478.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,429,131 : 311,013,654 = 311,013,654 : x
  2. Step 2: Convert to fraction form
    145,429,131/311,013,654 = 311,013,654/x
  3. Step 3: Cross multiply
    145,429,131x = 311,013,654 × 311,013,654
  4. Step 4: Simplify right side
    145,429,131x = 96,729,492,974,431,712
  5. Step 5: Solve for x
    x = 96,729,492,974,431,712/145,429,131
  6. Step 6: Final answer
    x = 665,131,478.88

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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.