Home / 221,247,428.94-305,321,513.04-122,128,240.91

Finding the Fourth Proportional to 221,247,428.94, 305,321,513.04 and 122,128,240.91

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Solution

The fourth proportional to 221,247,428.94, 305,321,513.04 and 122,128,240.91 is: 168,537,006.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,247,428.94 : 305,321,513.04 = 122,128,240.91 : x
  2. Step 2: Convert to fraction form
    221,247,428.94/305,321,513.04 = 122,128,240.91/x
  3. Step 3: Cross multiply
    221,247,428.94x = 305,321,513.04 × 122,128,240.91
  4. Step 4: Simplify right side
    221,247,428.94x = 37,288,379,298,028,224
  5. Step 5: Solve for x
    x = 37,288,379,298,028,224/221,247,428.94
  6. Step 6: Final answer
    x = 168,537,006.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.