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Finding the Fourth Proportional to 388,613.68, 582,941.22 and 122,395

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Solution

The fourth proportional to 388,613.68, 582,941.22 and 122,395 is: 183,599.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,613.68 : 582,941.22 = 122,395 : x
  2. Step 2: Convert to fraction form
    388,613.68/582,941.22 = 122,395/x
  3. Step 3: Cross multiply
    388,613.68x = 582,941.22 × 122,395
  4. Step 4: Simplify right side
    388,613.68x = 71,349,090,621.90
  5. Step 5: Solve for x
    x = 71,349,090,621.90/388,613.68
  6. Step 6: Final answer
    x = 183,599.02

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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.