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Finding the Fourth Proportional to 258,880.56, 388,680.48 and 170,700.72

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Solution

The fourth proportional to 258,880.56, 388,680.48 and 170,700.72 is: 256,288.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,880.56 : 388,680.48 = 170,700.72 : x
  2. Step 2: Convert to fraction form
    258,880.56/388,680.48 = 170,700.72/x
  3. Step 3: Cross multiply
    258,880.56x = 388,680.48 × 170,700.72
  4. Step 4: Simplify right side
    258,880.56x = 66,348,037,785.95
  5. Step 5: Solve for x
    x = 66,348,037,785.95/258,880.56
  6. Step 6: Final answer
    x = 256,288.22

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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.