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Finding the Fourth Proportional to 286,679.55, 395,583.40 and 157,596.74

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Solution

The fourth proportional to 286,679.55, 395,583.40 and 157,596.74 is: 217,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,679.55 : 395,583.40 = 157,596.74 : x
  2. Step 2: Convert to fraction form
    286,679.55/395,583.40 = 157,596.74/x
  3. Step 3: Cross multiply
    286,679.55x = 395,583.40 × 157,596.74
  4. Step 4: Simplify right side
    286,679.55x = 62,342,654,238.12
  5. Step 5: Solve for x
    x = 62,342,654,238.12/286,679.55
  6. Step 6: Final answer
    x = 217,464.60

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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.