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Finding the Fourth Proportional to 209,361.52, 288,912.72 and 118,725.76

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Solution

The fourth proportional to 209,361.52, 288,912.72 and 118,725.76 is: 163,838.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,361.52 : 288,912.72 = 118,725.76 : x
  2. Step 2: Convert to fraction form
    209,361.52/288,912.72 = 118,725.76/x
  3. Step 3: Cross multiply
    209,361.52x = 288,912.72 × 118,725.76
  4. Step 4: Simplify right side
    209,361.52x = 34,301,382,255.67
  5. Step 5: Solve for x
    x = 34,301,382,255.67/209,361.52
  6. Step 6: Final answer
    x = 163,838.05

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1.5x scale

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.