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Finding the Third Proportional to 187,980,403 and 287,373,587

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Solution

The third proportional to 187,980,403 and 287,373,587 is: 439,320,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,980,403 : 287,373,587 = 287,373,587 : x
  2. Step 2: Convert to fraction form
    187,980,403/287,373,587 = 287,373,587/x
  3. Step 3: Cross multiply
    187,980,403x = 287,373,587 × 287,373,587
  4. Step 4: Simplify right side
    187,980,403x = 82,583,578,505,246,576
  5. Step 5: Solve for x
    x = 82,583,578,505,246,576/187,980,403
  6. Step 6: Final answer
    x = 439,320,148.20

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.