Home / 386,030,534.70-532,719,640.17-221,049,990.66

Finding the Fourth Proportional to 386,030,534.70, 532,719,640.17 and 221,049,990.66

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Solution

The fourth proportional to 386,030,534.70, 532,719,640.17 and 221,049,990.66 is: 305,047,556.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,030,534.70 : 532,719,640.17 = 221,049,990.66 : x
  2. Step 2: Convert to fraction form
    386,030,534.70/532,719,640.17 = 221,049,990.66/x
  3. Step 3: Cross multiply
    386,030,534.70x = 532,719,640.17 × 221,049,990.66
  4. Step 4: Simplify right side
    386,030,534.70x = 117,757,671,483,977,056
  5. Step 5: Solve for x
    x = 117,757,671,483,977,056/386,030,534.70
  6. Step 6: Final answer
    x = 305,047,556.86

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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.