Home / 209,367.20-288,920.64-118,731.68

Finding the Fourth Proportional to 209,367.20, 288,920.64 and 118,731.68

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Solution

The fourth proportional to 209,367.20, 288,920.64 and 118,731.68 is: 163,846.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,367.20 : 288,920.64 = 118,731.68 : x
  2. Step 2: Convert to fraction form
    209,367.20/288,920.64 = 118,731.68/x
  3. Step 3: Cross multiply
    209,367.20x = 288,920.64 × 118,731.68
  4. Step 4: Simplify right side
    209,367.20x = 34,304,032,973.88
  5. Step 5: Solve for x
    x = 34,304,032,973.88/209,367.20
  6. Step 6: Final answer
    x = 163,846.26

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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.