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Finding the Fourth Proportional to 278,679.48, 384,571.36 and 151,352.34

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Solution

The fourth proportional to 278,679.48, 384,571.36 and 151,352.34 is: 208,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,679.48 : 384,571.36 = 151,352.34 : x
  2. Step 2: Convert to fraction form
    278,679.48/384,571.36 = 151,352.34/x
  3. Step 3: Cross multiply
    278,679.48x = 384,571.36 × 151,352.34
  4. Step 4: Simplify right side
    278,679.48x = 58,205,775,232.98
  5. Step 5: Solve for x
    x = 58,205,775,232.98/278,679.48
  6. Step 6: Final answer
    x = 208,862.80

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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.