Home / 285,570,576.86-393,942,359.40-186,509,310.15

Finding the Fourth Proportional to 285,570,576.86, 393,942,359.40 and 186,509,310.15

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Solution

The fourth proportional to 285,570,576.86, 393,942,359.40 and 186,509,310.15 is: 257,288,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,570,576.86 : 393,942,359.40 = 186,509,310.15 : x
  2. Step 2: Convert to fraction form
    285,570,576.86/393,942,359.40 = 186,509,310.15/x
  3. Step 3: Cross multiply
    285,570,576.86x = 393,942,359.40 × 186,509,310.15
  4. Step 4: Simplify right side
    285,570,576.86x = 73,473,917,690,557,360
  5. Step 5: Solve for x
    x = 73,473,917,690,557,360/285,570,576.86
  6. Step 6: Final answer
    x = 257,288,122.95

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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.