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Finding the Fourth Proportional to 492,955.60, 739,141.80 and 256,759.60

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Solution

The fourth proportional to 492,955.60, 739,141.80 and 256,759.60 is: 384,987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,955.60 : 739,141.80 = 256,759.60 : x
  2. Step 2: Convert to fraction form
    492,955.60/739,141.80 = 256,759.60/x
  3. Step 3: Cross multiply
    492,955.60x = 739,141.80 × 256,759.60
  4. Step 4: Simplify right side
    492,955.60x = 189,781,752,911.28
  5. Step 5: Solve for x
    x = 189,781,752,911.28/492,955.60
  6. Step 6: Final answer
    x = 384,987.52

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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.