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Finding the Fourth Proportional to 450,249.65, 621,359.87 and 256,685.98

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Solution

The fourth proportional to 450,249.65, 621,359.87 and 256,685.98 is: 354,235.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,249.65 : 621,359.87 = 256,685.98 : x
  2. Step 2: Convert to fraction form
    450,249.65/621,359.87 = 256,685.98/x
  3. Step 3: Cross multiply
    450,249.65x = 621,359.87 × 256,685.98
  4. Step 4: Simplify right side
    450,249.65x = 159,494,367,433.59
  5. Step 5: Solve for x
    x = 159,494,367,433.59/450,249.65
  6. Step 6: Final answer
    x = 354,235.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.