Home / 208,009,414.20-312,014,121.30-147,543,238.20

Finding the Fourth Proportional to 208,009,414.20, 312,014,121.30 and 147,543,238.20

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Solution

The fourth proportional to 208,009,414.20, 312,014,121.30 and 147,543,238.20 is: 221,314,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,414.20 : 312,014,121.30 = 147,543,238.20 : x
  2. Step 2: Convert to fraction form
    208,009,414.20/312,014,121.30 = 147,543,238.20/x
  3. Step 3: Cross multiply
    208,009,414.20x = 312,014,121.30 × 147,543,238.20
  4. Step 4: Simplify right side
    208,009,414.20x = 46,035,573,820,729,592
  5. Step 5: Solve for x
    x = 46,035,573,820,729,592/208,009,414.20
  6. Step 6: Final answer
    x = 221,314,857.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.