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Finding the Third Proportional to 245,612.25 and 390,561.19

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Solution

The third proportional to 245,612.25 and 390,561.19 is: 621,052.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,612.25 : 390,561.19 = 390,561.19 : x
  2. Step 2: Convert to fraction form
    245,612.25/390,561.19 = 390,561.19/x
  3. Step 3: Cross multiply
    245,612.25x = 390,561.19 × 390,561.19
  4. Step 4: Simplify right side
    245,612.25x = 152,538,041,181.41
  5. Step 5: Solve for x
    x = 152,538,041,181.41/245,612.25
  6. Step 6: Final answer
    x = 621,052.25

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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.