Home / 218,271.12-301,181.08-122,801.28

Finding the Fourth Proportional to 218,271.12, 301,181.08 and 122,801.28

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Solution

The fourth proportional to 218,271.12, 301,181.08 and 122,801.28 is: 169,447.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,271.12 : 301,181.08 = 122,801.28 : x
  2. Step 2: Convert to fraction form
    218,271.12/301,181.08 = 122,801.28/x
  3. Step 3: Cross multiply
    218,271.12x = 301,181.08 × 122,801.28
  4. Step 4: Simplify right side
    218,271.12x = 36,985,422,135.78
  5. Step 5: Solve for x
    x = 36,985,422,135.78/218,271.12
  6. Step 6: Final answer
    x = 169,447.16

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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.