Home / 278,385.20-384,172.64-151,060.80

Finding the Fourth Proportional to 278,385.20, 384,172.64 and 151,060.80

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Solution

The fourth proportional to 278,385.20, 384,172.64 and 151,060.80 is: 208,464.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,385.20 : 384,172.64 = 151,060.80 : x
  2. Step 2: Convert to fraction form
    278,385.20/384,172.64 = 151,060.80/x
  3. Step 3: Cross multiply
    278,385.20x = 384,172.64 × 151,060.80
  4. Step 4: Simplify right side
    278,385.20x = 58,033,424,140.56
  5. Step 5: Solve for x
    x = 58,033,424,140.56/278,385.20
  6. Step 6: Final answer
    x = 208,464.47

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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.