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Finding the Third Proportional to 252,190.50 and 390,475.50

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Solution

The third proportional to 252,190.50 and 390,475.50 is: 604,587.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,190.50 : 390,475.50 = 390,475.50 : x
  2. Step 2: Convert to fraction form
    252,190.50/390,475.50 = 390,475.50/x
  3. Step 3: Cross multiply
    252,190.50x = 390,475.50 × 390,475.50
  4. Step 4: Simplify right side
    252,190.50x = 152,471,116,100.25
  5. Step 5: Solve for x
    x = 152,471,116,100.25/252,190.50
  6. Step 6: Final answer
    x = 604,587.07

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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.