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Finding the Fourth Proportional to 203,266.16, 280,507.81 and 112,621.39

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Solution

The fourth proportional to 203,266.16, 280,507.81 and 112,621.39 is: 155,417.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,266.16 : 280,507.81 = 112,621.39 : x
  2. Step 2: Convert to fraction form
    203,266.16/280,507.81 = 112,621.39/x
  3. Step 3: Cross multiply
    203,266.16x = 280,507.81 × 112,621.39
  4. Step 4: Simplify right side
    203,266.16x = 31,591,178,696.40
  5. Step 5: Solve for x
    x = 31,591,178,696.40/203,266.16
  6. Step 6: Final answer
    x = 155,417.80

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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.