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Finding the Fourth Proportional to 286,658.91, 395,579.22 and 157,596.45

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Solution

The fourth proportional to 286,658.91, 395,579.22 and 157,596.45 is: 217,477.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,658.91 : 395,579.22 = 157,596.45 : x
  2. Step 2: Convert to fraction form
    286,658.91/395,579.22 = 157,596.45/x
  3. Step 3: Cross multiply
    286,658.91x = 395,579.22 × 157,596.45
  4. Step 4: Simplify right side
    286,658.91x = 62,341,880,765.77
  5. Step 5: Solve for x
    x = 62,341,880,765.77/286,658.91
  6. Step 6: Final answer
    x = 217,477.56

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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.