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Finding the Fourth Proportional to 388,081.60, 582,045.60 and 188,401.60

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Solution

The fourth proportional to 388,081.60, 582,045.60 and 188,401.60 is: 282,565.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,081.60 : 582,045.60 = 188,401.60 : x
  2. Step 2: Convert to fraction form
    388,081.60/582,045.60 = 188,401.60/x
  3. Step 3: Cross multiply
    388,081.60x = 582,045.60 × 188,401.60
  4. Step 4: Simplify right side
    388,081.60x = 109,658,322,312.96
  5. Step 5: Solve for x
    x = 109,658,322,312.96/388,081.60
  6. Step 6: Final answer
    x = 282,565.12

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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.