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Finding the Fourth Proportional to 258,369.81, 356,468.04 and 156,362.66

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Solution

The fourth proportional to 258,369.81, 356,468.04 and 156,362.66 is: 215,730.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,369.81 : 356,468.04 = 156,362.66 : x
  2. Step 2: Convert to fraction form
    258,369.81/356,468.04 = 156,362.66/x
  3. Step 3: Cross multiply
    258,369.81x = 356,468.04 × 156,362.66
  4. Step 4: Simplify right side
    258,369.81x = 55,738,289,157.05
  5. Step 5: Solve for x
    x = 55,738,289,157.05/258,369.81
  6. Step 6: Final answer
    x = 215,730.66

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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.