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Finding the Fourth Proportional to 216,148.84, 298,290.44 and 135,579.76

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Solution

The fourth proportional to 216,148.84, 298,290.44 and 135,579.76 is: 187,103.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,148.84 : 298,290.44 = 135,579.76 : x
  2. Step 2: Convert to fraction form
    216,148.84/298,290.44 = 135,579.76/x
  3. Step 3: Cross multiply
    216,148.84x = 298,290.44 × 135,579.76
  4. Step 4: Simplify right side
    216,148.84x = 40,442,146,265.49
  5. Step 5: Solve for x
    x = 40,442,146,265.49/216,148.84
  6. Step 6: Final answer
    x = 187,103.23

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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.