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Finding the Fourth Proportional to 381,048.72, 525,839.40 and 211,281.36

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Solution

The fourth proportional to 381,048.72, 525,839.40 and 211,281.36 is: 291,563.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,048.72 : 525,839.40 = 211,281.36 : x
  2. Step 2: Convert to fraction form
    381,048.72/525,839.40 = 211,281.36/x
  3. Step 3: Cross multiply
    381,048.72x = 525,839.40 × 211,281.36
  4. Step 4: Simplify right side
    381,048.72x = 111,100,063,573.58
  5. Step 5: Solve for x
    x = 111,100,063,573.58/381,048.72
  6. Step 6: Final answer
    x = 291,563.93

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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.