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Finding the Third Proportional to 155,421,669 and 340,044,915

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Solution

The third proportional to 155,421,669 and 340,044,915 is: 743,979,555.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,421,669 : 340,044,915 = 340,044,915 : x
  2. Step 2: Convert to fraction form
    155,421,669/340,044,915 = 340,044,915/x
  3. Step 3: Cross multiply
    155,421,669x = 340,044,915 × 340,044,915
  4. Step 4: Simplify right side
    155,421,669x = 115,630,544,217,357,232
  5. Step 5: Solve for x
    x = 115,630,544,217,357,232/155,421,669
  6. Step 6: Final answer
    x = 743,979,555.50

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.