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Finding the Fourth Proportional to 218,718.39, 301,831.35 and 118,116.39

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Solution

The fourth proportional to 218,718.39, 301,831.35 and 118,116.39 is: 163,000.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,718.39 : 301,831.35 = 118,116.39 : x
  2. Step 2: Convert to fraction form
    218,718.39/301,831.35 = 118,116.39/x
  3. Step 3: Cross multiply
    218,718.39x = 301,831.35 × 118,116.39
  4. Step 4: Simplify right side
    218,718.39x = 35,651,229,450.83
  5. Step 5: Solve for x
    x = 35,651,229,450.83/218,718.39
  6. Step 6: Final answer
    x = 163,000.60

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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.