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Finding the Third Proportional to 385,130.50 and 831,155.50

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Solution

The third proportional to 385,130.50 and 831,155.50 is: 1,793,728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,130.50 : 831,155.50 = 831,155.50 : x
  2. Step 2: Convert to fraction form
    385,130.50/831,155.50 = 831,155.50/x
  3. Step 3: Cross multiply
    385,130.50x = 831,155.50 × 831,155.50
  4. Step 4: Simplify right side
    385,130.50x = 690,819,465,180.25
  5. Step 5: Solve for x
    x = 690,819,465,180.25/385,130.50
  6. Step 6: Final answer
    x = 1,793,728.27

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.