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Finding the Third Proportional to 287,923.50 and 450,639

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Solution

The third proportional to 287,923.50 and 450,639 is: 705,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,923.50 : 450,639 = 450,639 : x
  2. Step 2: Convert to fraction form
    287,923.50/450,639 = 450,639/x
  3. Step 3: Cross multiply
    287,923.50x = 450,639 × 450,639
  4. Step 4: Simplify right side
    287,923.50x = 203,075,508,321
  5. Step 5: Solve for x
    x = 203,075,508,321/287,923.50
  6. Step 6: Final answer
    x = 705,310.64

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.