Home / 285,382,642.32-393,825,881.88-155,003,383.44

Finding the Fourth Proportional to 285,382,642.32, 393,825,881.88 and 155,003,383.44

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Solution

The fourth proportional to 285,382,642.32, 393,825,881.88 and 155,003,383.44 is: 213,903,493.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,382,642.32 : 393,825,881.88 = 155,003,383.44 : x
  2. Step 2: Convert to fraction form
    285,382,642.32/393,825,881.88 = 155,003,383.44/x
  3. Step 3: Cross multiply
    285,382,642.32x = 393,825,881.88 × 155,003,383.44
  4. Step 4: Simplify right side
    285,382,642.32x = 61,044,344,177,641,784
  5. Step 5: Solve for x
    x = 61,044,344,177,641,784/285,382,642.32
  6. Step 6: Final answer
    x = 213,903,493.50

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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.