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Finding the Third Proportional to 187,915.50 and 291,030.75

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Solution

The third proportional to 187,915.50 and 291,030.75 is: 450,728.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,915.50 : 291,030.75 = 291,030.75 : x
  2. Step 2: Convert to fraction form
    187,915.50/291,030.75 = 291,030.75/x
  3. Step 3: Cross multiply
    187,915.50x = 291,030.75 × 291,030.75
  4. Step 4: Simplify right side
    187,915.50x = 84,698,897,445.56
  5. Step 5: Solve for x
    x = 84,698,897,445.56/187,915.50
  6. Step 6: Final answer
    x = 450,728.64

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.