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Finding the Fourth Proportional to 209,302.44, 288,831.31 and 118,666.81

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Solution

The fourth proportional to 209,302.44, 288,831.31 and 118,666.81 is: 163,756.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,302.44 : 288,831.31 = 118,666.81 : x
  2. Step 2: Convert to fraction form
    209,302.44/288,831.31 = 118,666.81/x
  3. Step 3: Cross multiply
    209,302.44x = 288,831.31 × 118,666.81
  4. Step 4: Simplify right side
    209,302.44x = 34,274,690,185.82
  5. Step 5: Solve for x
    x = 34,274,690,185.82/209,302.44
  6. Step 6: Final answer
    x = 163,756.76

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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.