Home / 208,008,905.20-312,013,357.80-147,542,729.20

Finding the Fourth Proportional to 208,008,905.20, 312,013,357.80 and 147,542,729.20

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Solution

The fourth proportional to 208,008,905.20, 312,013,357.80 and 147,542,729.20 is: 221,314,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,008,905.20 : 312,013,357.80 = 147,542,729.20 : x
  2. Step 2: Convert to fraction form
    208,008,905.20/312,013,357.80 = 147,542,729.20/x
  3. Step 3: Cross multiply
    208,008,905.20x = 312,013,357.80 × 147,542,729.20
  4. Step 4: Simplify right side
    208,008,905.20x = 46,035,302,356,668,104
  5. Step 5: Solve for x
    x = 46,035,302,356,668,104/208,008,905.20
  6. Step 6: Final answer
    x = 221,314,093.80

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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.