Home / 216,454.38-298,513.65-135,889.41

Finding the Fourth Proportional to 216,454.38, 298,513.65 and 135,889.41

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Solution

The fourth proportional to 216,454.38, 298,513.65 and 135,889.41 is: 187,405.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,454.38 : 298,513.65 = 135,889.41 : x
  2. Step 2: Convert to fraction form
    216,454.38/298,513.65 = 135,889.41/x
  3. Step 3: Cross multiply
    216,454.38x = 298,513.65 × 135,889.41
  4. Step 4: Simplify right side
    216,454.38x = 40,564,845,404.46
  5. Step 5: Solve for x
    x = 40,564,845,404.46/216,454.38
  6. Step 6: Final answer
    x = 187,405.98

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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.