Home / 355,310,538.18-490,290,793.98-196,515,427.50

Finding the Fourth Proportional to 355,310,538.18, 490,290,793.98 and 196,515,427.50

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Solution

The fourth proportional to 355,310,538.18, 490,290,793.98 and 196,515,427.50 is: 271,170,411.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,310,538.18 : 490,290,793.98 = 196,515,427.50 : x
  2. Step 2: Convert to fraction form
    355,310,538.18/490,290,793.98 = 196,515,427.50/x
  3. Step 3: Cross multiply
    355,310,538.18x = 490,290,793.98 × 196,515,427.50
  4. Step 4: Simplify right side
    355,310,538.18x = 96,349,704,978,294,128
  5. Step 5: Solve for x
    x = 96,349,704,978,294,128/355,310,538.18
  6. Step 6: Final answer
    x = 271,170,411.87

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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.