Home / 239,698,631.35-330,689,989.83-139,209,961.69

Finding the Fourth Proportional to 239,698,631.35, 330,689,989.83 and 139,209,961.69

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Solution

The fourth proportional to 239,698,631.35, 330,689,989.83 and 139,209,961.69 is: 192,055,084.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,698,631.35 : 330,689,989.83 = 139,209,961.69 : x
  2. Step 2: Convert to fraction form
    239,698,631.35/330,689,989.83 = 139,209,961.69/x
  3. Step 3: Cross multiply
    239,698,631.35x = 330,689,989.83 × 139,209,961.69
  4. Step 4: Simplify right side
    239,698,631.35x = 46,035,340,815,500,784
  5. Step 5: Solve for x
    x = 46,035,340,815,500,784/239,698,631.35
  6. Step 6: Final answer
    x = 192,055,084.15

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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.