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Finding the Fourth Proportional to 371,570.55, 512,579.77 and 218,511.28

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Solution

The fourth proportional to 371,570.55, 512,579.77 and 218,511.28 is: 301,435.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,570.55 : 512,579.77 = 218,511.28 : x
  2. Step 2: Convert to fraction form
    371,570.55/512,579.77 = 218,511.28/x
  3. Step 3: Cross multiply
    371,570.55x = 512,579.77 × 218,511.28
  4. Step 4: Simplify right side
    371,570.55x = 112,004,461,644.81
  5. Step 5: Solve for x
    x = 112,004,461,644.81/371,570.55
  6. Step 6: Final answer
    x = 301,435.25

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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.