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Finding the Fourth Proportional to 240,838.26, 361,152.63 and 128,493.42

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Solution

The fourth proportional to 240,838.26, 361,152.63 and 128,493.42 is: 192,684.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,838.26 : 361,152.63 = 128,493.42 : x
  2. Step 2: Convert to fraction form
    240,838.26/361,152.63 = 128,493.42/x
  3. Step 3: Cross multiply
    240,838.26x = 361,152.63 × 128,493.42
  4. Step 4: Simplify right side
    240,838.26x = 46,405,736,570.69
  5. Step 5: Solve for x
    x = 46,405,736,570.69/240,838.26
  6. Step 6: Final answer
    x = 192,684.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.