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Finding the Fourth Proportional to 216,715.82, 299,090.34 and 124,838.28

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Solution

The fourth proportional to 216,715.82, 299,090.34 and 124,838.28 is: 172,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,715.82 : 299,090.34 = 124,838.28 : x
  2. Step 2: Convert to fraction form
    216,715.82/299,090.34 = 124,838.28/x
  3. Step 3: Cross multiply
    216,715.82x = 299,090.34 × 124,838.28
  4. Step 4: Simplify right side
    216,715.82x = 37,337,922,862.49
  5. Step 5: Solve for x
    x = 37,337,922,862.49/216,715.82
  6. Step 6: Final answer
    x = 172,289.79

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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.