Home / 285,368,800.91-393,810,960.80-154,988,608.91

Finding the Fourth Proportional to 285,368,800.91, 393,810,960.80 and 154,988,608.91

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Solution

The fourth proportional to 285,368,800.91, 393,810,960.80 and 154,988,608.91 is: 213,885,374.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,368,800.91 : 393,810,960.80 = 154,988,608.91 : x
  2. Step 2: Convert to fraction form
    285,368,800.91/393,810,960.80 = 154,988,608.91/x
  3. Step 3: Cross multiply
    285,368,800.91x = 393,810,960.80 × 154,988,608.91
  4. Step 4: Simplify right side
    285,368,800.91x = 61,036,212,987,902,544
  5. Step 5: Solve for x
    x = 61,036,212,987,902,544/285,368,800.91
  6. Step 6: Final answer
    x = 213,885,374.97

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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.