Home / 280,557.36-420,836.94-70,195.29

Finding the Fourth Proportional to 280,557.36, 420,836.94 and 70,195.29

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Solution

The fourth proportional to 280,557.36, 420,836.94 and 70,195.29 is: 105,293.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,557.36 : 420,836.94 = 70,195.29 : x
  2. Step 2: Convert to fraction form
    280,557.36/420,836.94 = 70,195.29/x
  3. Step 3: Cross multiply
    280,557.36x = 420,836.94 × 70,195.29
  4. Step 4: Simplify right side
    280,557.36x = 29,540,771,046.01
  5. Step 5: Solve for x
    x = 29,540,771,046.01/280,557.36
  6. Step 6: Final answer
    x = 105,293.16

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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.