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Finding the Fourth Proportional to 371,564.96, 512,765.54 and 210,415.64

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Solution

The fourth proportional to 371,564.96, 512,765.54 and 210,415.64 is: 290,376.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,564.96 : 512,765.54 = 210,415.64 : x
  2. Step 2: Convert to fraction form
    371,564.96/512,765.54 = 210,415.64/x
  3. Step 3: Cross multiply
    371,564.96x = 512,765.54 × 210,415.64
  4. Step 4: Simplify right side
    371,564.96x = 107,893,889,269.05
  5. Step 5: Solve for x
    x = 107,893,889,269.05/371,564.96
  6. Step 6: Final answer
    x = 290,376.92

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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.