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Finding the Fourth Proportional to 216,434.40, 298,709.13 and 124,551.79

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Solution

The fourth proportional to 216,434.40, 298,709.13 and 124,551.79 is: 171,898.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,434.40 : 298,709.13 = 124,551.79 : x
  2. Step 2: Convert to fraction form
    216,434.40/298,709.13 = 124,551.79/x
  3. Step 3: Cross multiply
    216,434.40x = 298,709.13 × 124,551.79
  4. Step 4: Simplify right side
    216,434.40x = 37,204,756,830.84
  5. Step 5: Solve for x
    x = 37,204,756,830.84/216,434.40
  6. Step 6: Final answer
    x = 171,898.54

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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.