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Finding the Fourth Proportional to 381,026.70, 525,809.07 and 211,257.18

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Solution

The fourth proportional to 381,026.70, 525,809.07 and 211,257.18 is: 291,530.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,026.70 : 525,809.07 = 211,257.18 : x
  2. Step 2: Convert to fraction form
    381,026.70/525,809.07 = 211,257.18/x
  3. Step 3: Cross multiply
    381,026.70x = 525,809.07 × 211,257.18
  4. Step 4: Simplify right side
    381,026.70x = 111,080,941,346.62
  5. Step 5: Solve for x
    x = 111,080,941,346.62/381,026.70
  6. Step 6: Final answer
    x = 291,530.60

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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.