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Finding the Fourth Proportional to 494,093.80, 740,967.90 and 257,357.80

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Solution

The fourth proportional to 494,093.80, 740,967.90 and 257,357.80 is: 385,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,093.80 : 740,967.90 = 257,357.80 : x
  2. Step 2: Convert to fraction form
    494,093.80/740,967.90 = 257,357.80/x
  3. Step 3: Cross multiply
    494,093.80x = 740,967.90 × 257,357.80
  4. Step 4: Simplify right side
    494,093.80x = 190,693,868,614.62
  5. Step 5: Solve for x
    x = 190,693,868,614.62/494,093.80
  6. Step 6: Final answer
    x = 385,946.69

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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.