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Finding the Third Proportional to 309,455.50 and 417,526.50

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Solution

The third proportional to 309,455.50 and 417,526.50 is: 563,339.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,455.50 : 417,526.50 = 417,526.50 : x
  2. Step 2: Convert to fraction form
    309,455.50/417,526.50 = 417,526.50/x
  3. Step 3: Cross multiply
    309,455.50x = 417,526.50 × 417,526.50
  4. Step 4: Simplify right side
    309,455.50x = 174,328,378,202.25
  5. Step 5: Solve for x
    x = 174,328,378,202.25/309,455.50
  6. Step 6: Final answer
    x = 563,339.08

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.