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Finding the Third Proportional to 338,438.25 and 507,730.50

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Solution

The third proportional to 338,438.25 and 507,730.50 is: 761,705.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,438.25 : 507,730.50 = 507,730.50 : x
  2. Step 2: Convert to fraction form
    338,438.25/507,730.50 = 507,730.50/x
  3. Step 3: Cross multiply
    338,438.25x = 507,730.50 × 507,730.50
  4. Step 4: Simplify right side
    338,438.25x = 257,790,260,630.25
  5. Step 5: Solve for x
    x = 257,790,260,630.25/338,438.25
  6. Step 6: Final answer
    x = 761,705.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.