Home / 454,276.80-681,415.20-138,692.70

Finding the Fourth Proportional to 454,276.80, 681,415.20 and 138,692.70

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Solution

The fourth proportional to 454,276.80, 681,415.20 and 138,692.70 is: 208,039.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,276.80 : 681,415.20 = 138,692.70 : x
  2. Step 2: Convert to fraction form
    454,276.80/681,415.20 = 138,692.70/x
  3. Step 3: Cross multiply
    454,276.80x = 681,415.20 × 138,692.70
  4. Step 4: Simplify right side
    454,276.80x = 94,507,313,909.04
  5. Step 5: Solve for x
    x = 94,507,313,909.04/454,276.80
  6. Step 6: Final answer
    x = 208,039.05

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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.