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Finding the Third Proportional to 72,828,639 and 156,045,278

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Solution

The third proportional to 72,828,639 and 156,045,278 is: 334,348,260.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,828,639 : 156,045,278 = 156,045,278 : x
  2. Step 2: Convert to fraction form
    72,828,639/156,045,278 = 156,045,278/x
  3. Step 3: Cross multiply
    72,828,639x = 156,045,278 × 156,045,278
  4. Step 4: Simplify right side
    72,828,639x = 24,350,128,786,097,284
  5. Step 5: Solve for x
    x = 24,350,128,786,097,284/72,828,639
  6. Step 6: Final answer
    x = 334,348,260.80

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.