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Finding the Third Proportional to 72,809,421 and 156,424,798

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Solution

The third proportional to 72,809,421 and 156,424,798 is: 336,065,265.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,809,421 : 156,424,798 = 156,424,798 : x
  2. Step 2: Convert to fraction form
    72,809,421/156,424,798 = 156,424,798/x
  3. Step 3: Cross multiply
    72,809,421x = 156,424,798 × 156,424,798
  4. Step 4: Simplify right side
    72,809,421x = 24,468,717,429,340,804
  5. Step 5: Solve for x
    x = 24,468,717,429,340,804/72,809,421
  6. Step 6: Final answer
    x = 336,065,265.91

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.