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Finding the Third Proportional to 187,760,875.50 and 287,221,990.50

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Solution

The third proportional to 187,760,875.50 and 287,221,990.50 is: 439,369,871.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,760,875.50 : 287,221,990.50 = 287,221,990.50 : x
  2. Step 2: Convert to fraction form
    187,760,875.50/287,221,990.50 = 287,221,990.50/x
  3. Step 3: Cross multiply
    187,760,875.50x = 287,221,990.50 × 287,221,990.50
  4. Step 4: Simplify right side
    187,760,875.50x = 82,496,471,826,782,096
  5. Step 5: Solve for x
    x = 82,496,471,826,782,096/187,760,875.50
  6. Step 6: Final answer
    x = 439,369,871.96

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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.