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Finding the Fourth Proportional to 216,031.78, 298,129.98 and 120,536.43

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Solution

The fourth proportional to 216,031.78, 298,129.98 and 120,536.43 is: 166,343.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,031.78 : 298,129.98 = 120,536.43 : x
  2. Step 2: Convert to fraction form
    216,031.78/298,129.98 = 120,536.43/x
  3. Step 3: Cross multiply
    216,031.78x = 298,129.98 × 120,536.43
  4. Step 4: Simplify right side
    216,031.78x = 35,935,523,465.17
  5. Step 5: Solve for x
    x = 35,935,523,465.17/216,031.78
  6. Step 6: Final answer
    x = 166,343.69

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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.