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Finding the Fourth Proportional to 481,038.86, 721,344.99 and 256,357.42

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Solution

The fourth proportional to 481,038.86, 721,344.99 and 256,357.42 is: 384,422.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,038.86 : 721,344.99 = 256,357.42 : x
  2. Step 2: Convert to fraction form
    481,038.86/721,344.99 = 256,357.42/x
  3. Step 3: Cross multiply
    481,038.86x = 721,344.99 × 256,357.42
  4. Step 4: Simplify right side
    481,038.86x = 184,922,140,566.33
  5. Step 5: Solve for x
    x = 184,922,140,566.33/481,038.86
  6. Step 6: Final answer
    x = 384,422.46

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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.