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Finding the Fourth Proportional to 203,008.53, 280,144.63 and 112,364.67

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Solution

The fourth proportional to 203,008.53, 280,144.63 and 112,364.67 is: 155,059.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,008.53 : 280,144.63 = 112,364.67 : x
  2. Step 2: Convert to fraction form
    203,008.53/280,144.63 = 112,364.67/x
  3. Step 3: Cross multiply
    203,008.53x = 280,144.63 × 112,364.67
  4. Step 4: Simplify right side
    203,008.53x = 31,478,358,340.40
  5. Step 5: Solve for x
    x = 31,478,358,340.40/203,008.53
  6. Step 6: Final answer
    x = 155,059.29

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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.