Home / 221,229,400.80-331,844,101.20-139,440,630.90

Finding the Fourth Proportional to 221,229,400.80, 331,844,101.20 and 139,440,630.90

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Solution

The fourth proportional to 221,229,400.80, 331,844,101.20 and 139,440,630.90 is: 209,160,946.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,229,400.80 : 331,844,101.20 = 139,440,630.90 : x
  2. Step 2: Convert to fraction form
    221,229,400.80/331,844,101.20 = 139,440,630.90/x
  3. Step 3: Cross multiply
    221,229,400.80x = 331,844,101.20 × 139,440,630.90
  4. Step 4: Simplify right side
    221,229,400.80x = 46,272,550,831,771,448
  5. Step 5: Solve for x
    x = 46,272,550,831,771,448/221,229,400.80
  6. Step 6: Final answer
    x = 209,160,946.35

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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.