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Finding the Fourth Proportional to 203,111.61, 280,290.60 and 112,465.62

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Solution

The fourth proportional to 203,111.61, 280,290.60 and 112,465.62 is: 155,200.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,111.61 : 280,290.60 = 112,465.62 : x
  2. Step 2: Convert to fraction form
    203,111.61/280,290.60 = 112,465.62/x
  3. Step 3: Cross multiply
    203,111.61x = 280,290.60 × 112,465.62
  4. Step 4: Simplify right side
    203,111.61x = 31,523,057,160.26
  5. Step 5: Solve for x
    x = 31,523,057,160.26/203,111.61
  6. Step 6: Final answer
    x = 155,200.67

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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.