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Finding the Fourth Proportional to 268,853.80, 403,280.70 and 255,731.80

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Solution

The fourth proportional to 268,853.80, 403,280.70 and 255,731.80 is: 383,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,853.80 : 403,280.70 = 255,731.80 : x
  2. Step 2: Convert to fraction form
    268,853.80/403,280.70 = 255,731.80/x
  3. Step 3: Cross multiply
    268,853.80x = 403,280.70 × 255,731.80
  4. Step 4: Simplify right side
    268,853.80x = 103,131,699,316.26
  5. Step 5: Solve for x
    x = 103,131,699,316.26/268,853.80
  6. Step 6: Final answer
    x = 383,597.70

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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.