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Finding the Third Proportional to 3,220,831.50 and 7,020,367.50

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Solution

The third proportional to 3,220,831.50 and 7,020,367.50 is: 15,302,123.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220,831.50 : 7,020,367.50 = 7,020,367.50 : x
  2. Step 2: Convert to fraction form
    3,220,831.50/7,020,367.50 = 7,020,367.50/x
  3. Step 3: Cross multiply
    3,220,831.50x = 7,020,367.50 × 7,020,367.50
  4. Step 4: Simplify right side
    3,220,831.50x = 49,285,559,835,056.25
  5. Step 5: Solve for x
    x = 49,285,559,835,056.25/3,220,831.50
  6. Step 6: Final answer
    x = 15,302,123.02

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.