Home / 403,023.96-556,173-221,731.92

Finding the Fourth Proportional to 403,023.96, 556,173 and 221,731.92

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Solution

The fourth proportional to 403,023.96, 556,173 and 221,731.92 is: 305,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,023.96 : 556,173 = 221,731.92 : x
  2. Step 2: Convert to fraction form
    403,023.96/556,173 = 221,731.92/x
  3. Step 3: Cross multiply
    403,023.96x = 556,173 × 221,731.92
  4. Step 4: Simplify right side
    403,023.96x = 123,321,307,142.16
  5. Step 5: Solve for x
    x = 123,321,307,142.16/403,023.96
  6. Step 6: Final answer
    x = 305,990.01

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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.