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Finding the Third Proportional to 258,868.75 and 392,312.75

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Solution

The third proportional to 258,868.75 and 392,312.75 is: 594,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,868.75 : 392,312.75 = 392,312.75 : x
  2. Step 2: Convert to fraction form
    258,868.75/392,312.75 = 392,312.75/x
  3. Step 3: Cross multiply
    258,868.75x = 392,312.75 × 392,312.75
  4. Step 4: Simplify right side
    258,868.75x = 153,909,293,812.56
  5. Step 5: Solve for x
    x = 153,909,293,812.56/258,868.75
  6. Step 6: Final answer
    x = 594,545.67

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.