Home / 280,567.96-420,574.90-111,986.68

Finding the Fourth Proportional to 280,567.96, 420,574.90 and 111,986.68

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Solution

The fourth proportional to 280,567.96, 420,574.90 and 111,986.68 is: 167,869.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,567.96 : 420,574.90 = 111,986.68 : x
  2. Step 2: Convert to fraction form
    280,567.96/420,574.90 = 111,986.68/x
  3. Step 3: Cross multiply
    280,567.96x = 420,574.90 × 111,986.68
  4. Step 4: Simplify right side
    280,567.96x = 47,098,786,742.33
  5. Step 5: Solve for x
    x = 47,098,786,742.33/280,567.96
  6. Step 6: Final answer
    x = 167,869.44

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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.