Home / 280,284.02-420,412.32-80,602.82

Finding the Fourth Proportional to 280,284.02, 420,412.32 and 80,602.82

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Solution

The fourth proportional to 280,284.02, 420,412.32 and 80,602.82 is: 120,900.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,284.02 : 420,412.32 = 80,602.82 : x
  2. Step 2: Convert to fraction form
    280,284.02/420,412.32 = 80,602.82/x
  3. Step 3: Cross multiply
    280,284.02x = 420,412.32 × 80,602.82
  4. Step 4: Simplify right side
    280,284.02x = 33,886,418,554.74
  5. Step 5: Solve for x
    x = 33,886,418,554.74/280,284.02
  6. Step 6: Final answer
    x = 120,900.29

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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.