Home / 397,818,273.11-549,005,756.85-221,606,220.47

Finding the Fourth Proportional to 397,818,273.11, 549,005,756.85 and 221,606,220.47

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Solution

The fourth proportional to 397,818,273.11, 549,005,756.85 and 221,606,220.47 is: 305,825,797.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,818,273.11 : 549,005,756.85 = 221,606,220.47 : x
  2. Step 2: Convert to fraction form
    397,818,273.11/549,005,756.85 = 221,606,220.47/x
  3. Step 3: Cross multiply
    397,818,273.11x = 549,005,756.85 × 221,606,220.47
  4. Step 4: Simplify right side
    397,818,273.11x = 121,663,090,789,055,296
  5. Step 5: Solve for x
    x = 121,663,090,789,055,296/397,818,273.11
  6. Step 6: Final answer
    x = 305,825,797.89

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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.