Home / 280,853.20-421,266.84-70,486.48

Finding the Fourth Proportional to 280,853.20, 421,266.84 and 70,486.48

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Solution

The fourth proportional to 280,853.20, 421,266.84 and 70,486.48 is: 105,726.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,853.20 : 421,266.84 = 70,486.48 : x
  2. Step 2: Convert to fraction form
    280,853.20/421,266.84 = 70,486.48/x
  3. Step 3: Cross multiply
    280,853.20x = 421,266.84 × 70,486.48
  4. Step 4: Simplify right side
    280,853.20x = 29,693,616,692.32
  5. Step 5: Solve for x
    x = 29,693,616,692.32/280,853.20
  6. Step 6: Final answer
    x = 105,726.47

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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.