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Finding the Fourth Proportional to 371,405.58, 512,571.42 and 210,289.02

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Solution

The fourth proportional to 371,405.58, 512,571.42 and 210,289.02 is: 290,216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,405.58 : 512,571.42 = 210,289.02 : x
  2. Step 2: Convert to fraction form
    371,405.58/512,571.42 = 210,289.02/x
  3. Step 3: Cross multiply
    371,405.58x = 512,571.42 × 210,289.02
  4. Step 4: Simplify right side
    371,405.58x = 107,788,141,591.81
  5. Step 5: Solve for x
    x = 107,788,141,591.81/371,405.58
  6. Step 6: Final answer
    x = 290,216.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.