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Finding the Third Proportional to 357,403.50 and 553,621.50

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Solution

The third proportional to 357,403.50 and 553,621.50 is: 857,565.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,403.50 : 553,621.50 = 553,621.50 : x
  2. Step 2: Convert to fraction form
    357,403.50/553,621.50 = 553,621.50/x
  3. Step 3: Cross multiply
    357,403.50x = 553,621.50 × 553,621.50
  4. Step 4: Simplify right side
    357,403.50x = 306,496,765,262.25
  5. Step 5: Solve for x
    x = 306,496,765,262.25/357,403.50
  6. Step 6: Final answer
    x = 857,565.09

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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.