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Finding the Fourth Proportional to 349,749.20, 525,790.20 and 298,427.60

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Solution

The fourth proportional to 349,749.20, 525,790.20 and 298,427.60 is: 448,636.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,749.20 : 525,790.20 = 298,427.60 : x
  2. Step 2: Convert to fraction form
    349,749.20/525,790.20 = 298,427.60/x
  3. Step 3: Cross multiply
    349,749.20x = 525,790.20 × 298,427.60
  4. Step 4: Simplify right side
    349,749.20x = 156,910,307,489.52
  5. Step 5: Solve for x
    x = 156,910,307,489.52/349,749.20
  6. Step 6: Final answer
    x = 448,636.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.