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Finding the Fourth Proportional to 218,958.86, 302,163.08 and 118,356.86

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Solution

The fourth proportional to 218,958.86, 302,163.08 and 118,356.86 is: 163,332.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,958.86 : 302,163.08 = 118,356.86 : x
  2. Step 2: Convert to fraction form
    218,958.86/302,163.08 = 118,356.86/x
  3. Step 3: Cross multiply
    218,958.86x = 302,163.08 × 118,356.86
  4. Step 4: Simplify right side
    218,958.86x = 35,763,071,254.13
  5. Step 5: Solve for x
    x = 35,763,071,254.13/218,958.86
  6. Step 6: Final answer
    x = 163,332.38

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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.