Home / 401,777.12-554,447.28-220,490.72

Finding the Fourth Proportional to 401,777.12, 554,447.28 and 220,490.72

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Solution

The fourth proportional to 401,777.12, 554,447.28 and 220,490.72 is: 304,274.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,777.12 : 554,447.28 = 220,490.72 : x
  2. Step 2: Convert to fraction form
    401,777.12/554,447.28 = 220,490.72/x
  3. Step 3: Cross multiply
    401,777.12x = 554,447.28 × 220,490.72
  4. Step 4: Simplify right side
    401,777.12x = 122,250,479,969.24
  5. Step 5: Solve for x
    x = 122,250,479,969.24/401,777.12
  6. Step 6: Final answer
    x = 304,274.37

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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.