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Finding the Fourth Proportional to 189,342.80, 284,014.20 and 56,243.60

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Solution

The fourth proportional to 189,342.80, 284,014.20 and 56,243.60 is: 84,365.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,342.80 : 284,014.20 = 56,243.60 : x
  2. Step 2: Convert to fraction form
    189,342.80/284,014.20 = 56,243.60/x
  3. Step 3: Cross multiply
    189,342.80x = 284,014.20 × 56,243.60
  4. Step 4: Simplify right side
    189,342.80x = 15,973,981,059.12
  5. Step 5: Solve for x
    x = 15,973,981,059.12/189,342.80
  6. Step 6: Final answer
    x = 84,365.40

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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.