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Finding the Fourth Proportional to 389,373, 537,334.74 and 210,525

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Solution

The fourth proportional to 389,373, 537,334.74 and 210,525 is: 290,524.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,373 : 537,334.74 = 210,525 : x
  2. Step 2: Convert to fraction form
    389,373/537,334.74 = 210,525/x
  3. Step 3: Cross multiply
    389,373x = 537,334.74 × 210,525
  4. Step 4: Simplify right side
    389,373x = 113,122,396,138.50
  5. Step 5: Solve for x
    x = 113,122,396,138.50/389,373
  6. Step 6: Final answer
    x = 290,524.50

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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.