Home / 239,683,648.54-359,629,046.72-128,889,821.86

Finding the Fourth Proportional to 239,683,648.54, 359,629,046.72 and 128,889,821.86

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Solution

The fourth proportional to 239,683,648.54, 359,629,046.72 and 128,889,821.86 is: 193,390,429.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,683,648.54 : 359,629,046.72 = 128,889,821.86 : x
  2. Step 2: Convert to fraction form
    239,683,648.54/359,629,046.72 = 128,889,821.86/x
  3. Step 3: Cross multiply
    239,683,648.54x = 359,629,046.72 × 128,889,821.86
  4. Step 4: Simplify right side
    239,683,648.54x = 46,352,523,767,422,424
  5. Step 5: Solve for x
    x = 46,352,523,767,422,424/239,683,648.54
  6. Step 6: Final answer
    x = 193,390,429.63

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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.