Home / 221,666,929.17-305,887,240.78-122,541,764.77

Finding the Fourth Proportional to 221,666,929.17, 305,887,240.78 and 122,541,764.77

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Solution

The fourth proportional to 221,666,929.17, 305,887,240.78 and 122,541,764.77 is: 169,100,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,666,929.17 : 305,887,240.78 = 122,541,764.77 : x
  2. Step 2: Convert to fraction form
    221,666,929.17/305,887,240.78 = 122,541,764.77/x
  3. Step 3: Cross multiply
    221,666,929.17x = 305,887,240.78 × 122,541,764.77
  4. Step 4: Simplify right side
    221,666,929.17x = 37,483,962,305,807,104
  5. Step 5: Solve for x
    x = 37,483,962,305,807,104/221,666,929.17
  6. Step 6: Final answer
    x = 169,100,381.58

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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.