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Finding the Fourth Proportional to 492,840.80, 739,088.40 and 256,104.80

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Solution

The fourth proportional to 492,840.80, 739,088.40 and 256,104.80 is: 384,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,840.80 : 739,088.40 = 256,104.80 : x
  2. Step 2: Convert to fraction form
    492,840.80/739,088.40 = 256,104.80/x
  3. Step 3: Cross multiply
    492,840.80x = 739,088.40 × 256,104.80
  4. Step 4: Simplify right side
    492,840.80x = 189,284,086,864.32
  5. Step 5: Solve for x
    x = 189,284,086,864.32/492,840.80
  6. Step 6: Final answer
    x = 384,067.40

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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.