Home / 388,275.78-582,385.59-122,112.45

Finding the Fourth Proportional to 388,275.78, 582,385.59 and 122,112.45

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Solution

The fourth proportional to 388,275.78, 582,385.59 and 122,112.45 is: 183,159.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,275.78 : 582,385.59 = 122,112.45 : x
  2. Step 2: Convert to fraction form
    388,275.78/582,385.59 = 122,112.45/x
  3. Step 3: Cross multiply
    388,275.78x = 582,385.59 × 122,112.45
  4. Step 4: Simplify right side
    388,275.78x = 71,116,531,239.60
  5. Step 5: Solve for x
    x = 71,116,531,239.60/388,275.78
  6. Step 6: Final answer
    x = 183,159.84

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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.