Home / 221,617,337.40-332,426,006.10-139,987,999.80

Finding the Fourth Proportional to 221,617,337.40, 332,426,006.10 and 139,987,999.80

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Solution

The fourth proportional to 221,617,337.40, 332,426,006.10 and 139,987,999.80 is: 209,981,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,617,337.40 : 332,426,006.10 = 139,987,999.80 : x
  2. Step 2: Convert to fraction form
    221,617,337.40/332,426,006.10 = 139,987,999.80/x
  3. Step 3: Cross multiply
    221,617,337.40x = 332,426,006.10 × 139,987,999.80
  4. Step 4: Simplify right side
    221,617,337.40x = 46,535,651,675,441,608
  5. Step 5: Solve for x
    x = 46,535,651,675,441,608/221,617,337.40
  6. Step 6: Final answer
    x = 209,981,999.70

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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.