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Finding the Fourth Proportional to 190,418, 262,667.40 and 118,763.60

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Solution

The fourth proportional to 190,418, 262,667.40 and 118,763.60 is: 163,825.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,418 : 262,667.40 = 118,763.60 : x
  2. Step 2: Convert to fraction form
    190,418/262,667.40 = 118,763.60/x
  3. Step 3: Cross multiply
    190,418x = 262,667.40 × 118,763.60
  4. Step 4: Simplify right side
    190,418x = 31,195,326,026.64
  5. Step 5: Solve for x
    x = 31,195,326,026.64/190,418
  6. Step 6: Final answer
    x = 163,825.51

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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.