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Finding the Third Proportional to 70,690,678 and 155,553,117

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Solution

The third proportional to 70,690,678 and 155,553,117 is: 342,290,849.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,690,678 : 155,553,117 = 155,553,117 : x
  2. Step 2: Convert to fraction form
    70,690,678/155,553,117 = 155,553,117/x
  3. Step 3: Cross multiply
    70,690,678x = 155,553,117 × 155,553,117
  4. Step 4: Simplify right side
    70,690,678x = 24,196,772,208,415,688
  5. Step 5: Solve for x
    x = 24,196,772,208,415,688/70,690,678
  6. Step 6: Final answer
    x = 342,290,849.27

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.