Home / 239,565,908.40-330,601,950-129,557,621.40

Finding the Fourth Proportional to 239,565,908.40, 330,601,950 and 129,557,621.40

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Solution

The fourth proportional to 239,565,908.40, 330,601,950 and 129,557,621.40 is: 178,790,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,565,908.40 : 330,601,950 = 129,557,621.40 : x
  2. Step 2: Convert to fraction form
    239,565,908.40/330,601,950 = 129,557,621.40/x
  3. Step 3: Cross multiply
    239,565,908.40x = 330,601,950 × 129,557,621.40
  4. Step 4: Simplify right side
    239,565,908.40x = 42,832,002,272,201,728
  5. Step 5: Solve for x
    x = 42,832,002,272,201,728/239,565,908.40
  6. Step 6: Final answer
    x = 178,790,056.39

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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.