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Finding the Fourth Proportional to 494,092.80, 740,966.40 and 257,356.80

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Solution

The fourth proportional to 494,092.80, 740,966.40 and 257,356.80 is: 385,945.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,092.80 : 740,966.40 = 257,356.80 : x
  2. Step 2: Convert to fraction form
    494,092.80/740,966.40 = 257,356.80/x
  3. Step 3: Cross multiply
    494,092.80x = 740,966.40 × 257,356.80
  4. Step 4: Simplify right side
    494,092.80x = 190,692,741,611.52
  5. Step 5: Solve for x
    x = 190,692,741,611.52/494,092.80
  6. Step 6: Final answer
    x = 385,945.19

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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.