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Finding the Fourth Proportional to 216,884.05, 299,299.95 and 121,390.76

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Solution

The fourth proportional to 216,884.05, 299,299.95 and 121,390.76 is: 167,519.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,884.05 : 299,299.95 = 121,390.76 : x
  2. Step 2: Convert to fraction form
    216,884.05/299,299.95 = 121,390.76/x
  3. Step 3: Cross multiply
    216,884.05x = 299,299.95 × 121,390.76
  4. Step 4: Simplify right side
    216,884.05x = 36,332,249,146.71
  5. Step 5: Solve for x
    x = 36,332,249,146.71/216,884.05
  6. Step 6: Final answer
    x = 167,519.23

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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.