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Finding the Third Proportional to 248,966,559 and 400,021,411.50

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Solution

The third proportional to 248,966,559 and 400,021,411.50 is: 642,725,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,966,559 : 400,021,411.50 = 400,021,411.50 : x
  2. Step 2: Convert to fraction form
    248,966,559/400,021,411.50 = 400,021,411.50/x
  3. Step 3: Cross multiply
    248,966,559x = 400,021,411.50 × 400,021,411.50
  4. Step 4: Simplify right side
    248,966,559x = 160,017,129,658,452,320
  5. Step 5: Solve for x
    x = 160,017,129,658,452,320/248,966,559
  6. Step 6: Final answer
    x = 642,725,393.73

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.