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Finding the Fourth Proportional to 493,594.80, 740,219.40 and 256,858.80

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Solution

The fourth proportional to 493,594.80, 740,219.40 and 256,858.80 is: 385,198.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,594.80 : 740,219.40 = 256,858.80 : x
  2. Step 2: Convert to fraction form
    493,594.80/740,219.40 = 256,858.80/x
  3. Step 3: Cross multiply
    493,594.80x = 740,219.40 × 256,858.80
  4. Step 4: Simplify right side
    493,594.80x = 190,131,866,820.72
  5. Step 5: Solve for x
    x = 190,131,866,820.72/493,594.80
  6. Step 6: Final answer
    x = 385,198.28

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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.