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Finding the Fourth Proportional to 380,959.46, 525,724.79 and 211,193.58

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Solution

The fourth proportional to 380,959.46, 525,724.79 and 211,193.58 is: 291,447.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,959.46 : 525,724.79 = 211,193.58 : x
  2. Step 2: Convert to fraction form
    380,959.46/525,724.79 = 211,193.58/x
  3. Step 3: Cross multiply
    380,959.46x = 525,724.79 × 211,193.58
  4. Step 4: Simplify right side
    380,959.46x = 111,029,700,494.85
  5. Step 5: Solve for x
    x = 111,029,700,494.85/380,959.46
  6. Step 6: Final answer
    x = 291,447.55

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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.