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Finding the Fourth Proportional to 380,326.50, 524,850.57 and 210,571.56

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Solution

The fourth proportional to 380,326.50, 524,850.57 and 210,571.56 is: 290,588.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,326.50 : 524,850.57 = 210,571.56 : x
  2. Step 2: Convert to fraction form
    380,326.50/524,850.57 = 210,571.56/x
  3. Step 3: Cross multiply
    380,326.50x = 524,850.57 × 210,571.56
  4. Step 4: Simplify right side
    380,326.50x = 110,518,603,291.79
  5. Step 5: Solve for x
    x = 110,518,603,291.79/380,326.50
  6. Step 6: Final answer
    x = 290,588.75

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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.