Home / 280,014.12-420,022.70-69,652.06

Finding the Fourth Proportional to 280,014.12, 420,022.70 and 69,652.06

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Solution

The fourth proportional to 280,014.12, 420,022.70 and 69,652.06 is: 104,478.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,014.12 : 420,022.70 = 69,652.06 : x
  2. Step 2: Convert to fraction form
    280,014.12/420,022.70 = 69,652.06/x
  3. Step 3: Cross multiply
    280,014.12x = 420,022.70 × 69,652.06
  4. Step 4: Simplify right side
    280,014.12x = 29,255,446,301.76
  5. Step 5: Solve for x
    x = 29,255,446,301.76/280,014.12
  6. Step 6: Final answer
    x = 104,478.47

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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.