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Finding the Third Proportional to 287,639 and 450,237.50

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Solution

The third proportional to 287,639 and 450,237.50 is: 704,750.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,639 : 450,237.50 = 450,237.50 : x
  2. Step 2: Convert to fraction form
    287,639/450,237.50 = 450,237.50/x
  3. Step 3: Cross multiply
    287,639x = 450,237.50 × 450,237.50
  4. Step 4: Simplify right side
    287,639x = 202,713,806,406.25
  5. Step 5: Solve for x
    x = 202,713,806,406.25/287,639
  6. Step 6: Final answer
    x = 704,750.77

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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.