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Finding the Fourth Proportional to 349,380.80, 524,071.20 and 223,409.60

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Solution

The fourth proportional to 349,380.80, 524,071.20 and 223,409.60 is: 335,114.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,380.80 : 524,071.20 = 223,409.60 : x
  2. Step 2: Convert to fraction form
    349,380.80/524,071.20 = 223,409.60/x
  3. Step 3: Cross multiply
    349,380.80x = 524,071.20 × 223,409.60
  4. Step 4: Simplify right side
    349,380.80x = 117,082,537,163.52
  5. Step 5: Solve for x
    x = 117,082,537,163.52/349,380.80
  6. Step 6: Final answer
    x = 335,114.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.