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Finding the Third Proportional to 245,614.50 and 390,561.75

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Solution

The third proportional to 245,614.50 and 390,561.75 is: 621,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,614.50 : 390,561.75 = 390,561.75 : x
  2. Step 2: Convert to fraction form
    245,614.50/390,561.75 = 390,561.75/x
  3. Step 3: Cross multiply
    245,614.50x = 390,561.75 × 390,561.75
  4. Step 4: Simplify right side
    245,614.50x = 152,538,480,563.06
  5. Step 5: Solve for x
    x = 152,538,480,563.06/245,614.50
  6. Step 6: Final answer
    x = 621,048.35

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.