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Finding the Third Proportional to 12,156,920 and 19,250,220

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Solution

The third proportional to 12,156,920 and 19,250,220 is: 30,482,307.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156,920 : 19,250,220 = 19,250,220 : x
  2. Step 2: Convert to fraction form
    12,156,920/19,250,220 = 19,250,220/x
  3. Step 3: Cross multiply
    12,156,920x = 19,250,220 × 19,250,220
  4. Step 4: Simplify right side
    12,156,920x = 370,570,970,048,400
  5. Step 5: Solve for x
    x = 370,570,970,048,400/12,156,920
  6. Step 6: Final answer
    x = 30,482,307.20

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.