Home / 392,695,635.40-541,921,613.70-216,479,759.56

Finding the Fourth Proportional to 392,695,635.40, 541,921,613.70 and 216,479,759.56

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Solution

The fourth proportional to 392,695,635.40, 541,921,613.70 and 216,479,759.56 is: 298,742,970.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,695,635.40 : 541,921,613.70 = 216,479,759.56 : x
  2. Step 2: Convert to fraction form
    392,695,635.40/541,921,613.70 = 216,479,759.56/x
  3. Step 3: Cross multiply
    392,695,635.40x = 541,921,613.70 × 216,479,759.56
  4. Step 4: Simplify right side
    392,695,635.40x = 117,315,060,634,143,216
  5. Step 5: Solve for x
    x = 117,315,060,634,143,216/392,695,635.40
  6. Step 6: Final answer
    x = 298,742,970.53

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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.