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Finding the Third Proportional to 129,901,979 and 282,671,940

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Solution

The third proportional to 129,901,979 and 282,671,940 is: 615,105,530.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,901,979 : 282,671,940 = 282,671,940 : x
  2. Step 2: Convert to fraction form
    129,901,979/282,671,940 = 282,671,940/x
  3. Step 3: Cross multiply
    129,901,979x = 282,671,940 × 282,671,940
  4. Step 4: Simplify right side
    129,901,979x = 79,903,425,663,363,600
  5. Step 5: Solve for x
    x = 79,903,425,663,363,600/129,901,979
  6. Step 6: Final answer
    x = 615,105,530.17

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.