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Finding the Fourth Proportional to 203,168.72, 280,373.64 and 118,344.08

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Solution

The fourth proportional to 203,168.72, 280,373.64 and 118,344.08 is: 163,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,168.72 : 280,373.64 = 118,344.08 : x
  2. Step 2: Convert to fraction form
    203,168.72/280,373.64 = 118,344.08/x
  3. Step 3: Cross multiply
    203,168.72x = 280,373.64 × 118,344.08
  4. Step 4: Simplify right side
    203,168.72x = 33,180,560,482.05
  5. Step 5: Solve for x
    x = 33,180,560,482.05/203,168.72
  6. Step 6: Final answer
    x = 163,315.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.