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Finding the Fourth Proportional to 358,911.48, 538,460.67 and 134,289.48

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Solution

The fourth proportional to 358,911.48, 538,460.67 and 134,289.48 is: 201,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,911.48 : 538,460.67 = 134,289.48 : x
  2. Step 2: Convert to fraction form
    358,911.48/538,460.67 = 134,289.48/x
  3. Step 3: Cross multiply
    358,911.48x = 538,460.67 × 134,289.48
  4. Step 4: Simplify right side
    358,911.48x = 72,309,603,374.75
  5. Step 5: Solve for x
    x = 72,309,603,374.75/358,911.48
  6. Step 6: Final answer
    x = 201,469.19

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1.5x scale

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.