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Finding the Fourth Proportional to 403,801.80, 557,271.28 and 222,513.64

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Solution

The fourth proportional to 403,801.80, 557,271.28 and 222,513.64 is: 307,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,801.80 : 557,271.28 = 222,513.64 : x
  2. Step 2: Convert to fraction form
    403,801.80/557,271.28 = 222,513.64/x
  3. Step 3: Cross multiply
    403,801.80x = 557,271.28 × 222,513.64
  4. Step 4: Simplify right side
    403,801.80x = 124,000,460,980.26
  5. Step 5: Solve for x
    x = 124,000,460,980.26/403,801.80
  6. Step 6: Final answer
    x = 307,082.49

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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.