Home / 221,615,999.40-332,423,999.10-139,986,661.80

Finding the Fourth Proportional to 221,615,999.40, 332,423,999.10 and 139,986,661.80

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Solution

The fourth proportional to 221,615,999.40, 332,423,999.10 and 139,986,661.80 is: 209,979,992.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,615,999.40 : 332,423,999.10 = 139,986,661.80 : x
  2. Step 2: Convert to fraction form
    221,615,999.40/332,423,999.10 = 139,986,661.80/x
  3. Step 3: Cross multiply
    221,615,999.40x = 332,423,999.10 × 139,986,661.80
  4. Step 4: Simplify right side
    221,615,999.40x = 46,534,925,936,215,208
  5. Step 5: Solve for x
    x = 46,534,925,936,215,208/221,615,999.40
  6. Step 6: Final answer
    x = 209,979,992.70

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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.