Home / 401,507.12-554,115.37-220,254.36

Finding the Fourth Proportional to 401,507.12, 554,115.37 and 220,254.36

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Solution

The fourth proportional to 401,507.12, 554,115.37 and 220,254.36 is: 303,970.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,507.12 : 554,115.37 = 220,254.36 : x
  2. Step 2: Convert to fraction form
    401,507.12/554,115.37 = 220,254.36/x
  3. Step 3: Cross multiply
    401,507.12x = 554,115.37 × 220,254.36
  4. Step 4: Simplify right side
    401,507.12x = 122,046,328,335.54
  5. Step 5: Solve for x
    x = 122,046,328,335.54/401,507.12
  6. Step 6: Final answer
    x = 303,970.52

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1.5x scale

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.