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Finding the Fourth Proportional to 342,643.73, 472,852.07 and 189,684.45

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Solution

The fourth proportional to 342,643.73, 472,852.07 and 189,684.45 is: 261,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,643.73 : 472,852.07 = 189,684.45 : x
  2. Step 2: Convert to fraction form
    342,643.73/472,852.07 = 189,684.45/x
  3. Step 3: Cross multiply
    342,643.73x = 472,852.07 × 189,684.45
  4. Step 4: Simplify right side
    342,643.73x = 89,692,684,592.21
  5. Step 5: Solve for x
    x = 89,692,684,592.21/342,643.73
  6. Step 6: Final answer
    x = 261,766.60

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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.