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Finding the Fourth Proportional to 259,077.72, 388,630.51 and 81,598.62

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Solution

The fourth proportional to 259,077.72, 388,630.51 and 81,598.62 is: 122,402.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,077.72 : 388,630.51 = 81,598.62 : x
  2. Step 2: Convert to fraction form
    259,077.72/388,630.51 = 81,598.62/x
  3. Step 3: Cross multiply
    259,077.72x = 388,630.51 × 81,598.62
  4. Step 4: Simplify right side
    259,077.72x = 31,711,714,559.26
  5. Step 5: Solve for x
    x = 31,711,714,559.26/259,077.72
  6. Step 6: Final answer
    x = 122,402.32

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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.