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Finding the Fourth Proportional to 388,050.60, 582,740.10 and 210,903.60

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Solution

The fourth proportional to 388,050.60, 582,740.10 and 210,903.60 is: 316,716.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,050.60 : 582,740.10 = 210,903.60 : x
  2. Step 2: Convert to fraction form
    388,050.60/582,740.10 = 210,903.60/x
  3. Step 3: Cross multiply
    388,050.60x = 582,740.10 × 210,903.60
  4. Step 4: Simplify right side
    388,050.60x = 122,901,984,954.36
  5. Step 5: Solve for x
    x = 122,901,984,954.36/388,050.60
  6. Step 6: Final answer
    x = 316,716.39

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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.