Home / 284,877,979.28-393,131,611.40-154,497,787.28

Finding the Fourth Proportional to 284,877,979.28, 393,131,611.40 and 154,497,787.28

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Solution

The fourth proportional to 284,877,979.28, 393,131,611.40 and 154,497,787.28 is: 213,206,946.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,877,979.28 : 393,131,611.40 = 154,497,787.28 : x
  2. Step 2: Convert to fraction form
    284,877,979.28/393,131,611.40 = 154,497,787.28/x
  3. Step 3: Cross multiply
    284,877,979.28x = 393,131,611.40 × 154,497,787.28
  4. Step 4: Simplify right side
    284,877,979.28x = 60,737,964,070,493,784
  5. Step 5: Solve for x
    x = 60,737,964,070,493,784/284,877,979.28
  6. Step 6: Final answer
    x = 213,206,946.44

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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.