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Finding the Fourth Proportional to 216,459.26, 298,520.39 and 135,894.29

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Solution

The fourth proportional to 216,459.26, 298,520.39 and 135,894.29 is: 187,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,459.26 : 298,520.39 = 135,894.29 : x
  2. Step 2: Convert to fraction form
    216,459.26/298,520.39 = 135,894.29/x
  3. Step 3: Cross multiply
    216,459.26x = 298,520.39 × 135,894.29
  4. Step 4: Simplify right side
    216,459.26x = 40,567,214,277.50
  5. Step 5: Solve for x
    x = 40,567,214,277.50/216,459.26
  6. Step 6: Final answer
    x = 187,412.70

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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.