Home / 208,009,107.20-312,013,660.80-147,542,931.20

Finding the Fourth Proportional to 208,009,107.20, 312,013,660.80 and 147,542,931.20

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Solution

The fourth proportional to 208,009,107.20, 312,013,660.80 and 147,542,931.20 is: 221,314,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,009,107.20 : 312,013,660.80 = 147,542,931.20 : x
  2. Step 2: Convert to fraction form
    208,009,107.20/312,013,660.80 = 147,542,931.20/x
  3. Step 3: Cross multiply
    208,009,107.20x = 312,013,660.80 × 147,542,931.20
  4. Step 4: Simplify right side
    208,009,107.20x = 46,035,410,088,874,536
  5. Step 5: Solve for x
    x = 46,035,410,088,874,536/208,009,107.20
  6. Step 6: Final answer
    x = 221,314,396.80

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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.