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Finding the Fourth Proportional to 216,453.45, 298,512.36 and 135,888.47

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Solution

The fourth proportional to 216,453.45, 298,512.36 and 135,888.47 is: 187,404.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,453.45 : 298,512.36 = 135,888.47 : x
  2. Step 2: Convert to fraction form
    216,453.45/298,512.36 = 135,888.47/x
  3. Step 3: Cross multiply
    216,453.45x = 298,512.36 × 135,888.47
  4. Step 4: Simplify right side
    216,453.45x = 40,564,386,383.93
  5. Step 5: Solve for x
    x = 40,564,386,383.93/216,453.45
  6. Step 6: Final answer
    x = 187,404.67

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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.