Home / 319,529.20-478,710.60-260,042.80

Finding the Fourth Proportional to 319,529.20, 478,710.60 and 260,042.80

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Solution

The fourth proportional to 319,529.20, 478,710.60 and 260,042.80 is: 389,589.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,529.20 : 478,710.60 = 260,042.80 : x
  2. Step 2: Convert to fraction form
    319,529.20/478,710.60 = 260,042.80/x
  3. Step 3: Cross multiply
    319,529.20x = 478,710.60 × 260,042.80
  4. Step 4: Simplify right side
    319,529.20x = 124,485,244,813.68
  5. Step 5: Solve for x
    x = 124,485,244,813.68/319,529.20
  6. Step 6: Final answer
    x = 389,589.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.