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Finding the Fourth Proportional to 203,390.54, 280,649.38 and 112,746.42

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Solution

The fourth proportional to 203,390.54, 280,649.38 and 112,746.42 is: 155,573.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,390.54 : 280,649.38 = 112,746.42 : x
  2. Step 2: Convert to fraction form
    203,390.54/280,649.38 = 112,746.42/x
  3. Step 3: Cross multiply
    203,390.54x = 280,649.38 × 112,746.42
  4. Step 4: Simplify right side
    203,390.54x = 31,642,212,588.35
  5. Step 5: Solve for x
    x = 31,642,212,588.35/203,390.54
  6. Step 6: Final answer
    x = 155,573.67

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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.