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Finding the Fourth Proportional to 285,915.07, 394,552.72 and 158,602.51

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Solution

The fourth proportional to 285,915.07, 394,552.72 and 158,602.51 is: 218,865.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,915.07 : 394,552.72 = 158,602.51 : x
  2. Step 2: Convert to fraction form
    285,915.07/394,552.72 = 158,602.51/x
  3. Step 3: Cross multiply
    285,915.07x = 394,552.72 × 158,602.51
  4. Step 4: Simplify right side
    285,915.07x = 62,577,051,719.33
  5. Step 5: Solve for x
    x = 62,577,051,719.33/285,915.07
  6. Step 6: Final answer
    x = 218,865.87

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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.