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Finding the Fourth Proportional to 286,737.84, 395,719.02 and 172,021.46

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Solution

The fourth proportional to 286,737.84, 395,719.02 and 172,021.46 is: 237,402.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,737.84 : 395,719.02 = 172,021.46 : x
  2. Step 2: Convert to fraction form
    286,737.84/395,719.02 = 172,021.46/x
  3. Step 3: Cross multiply
    286,737.84x = 395,719.02 × 172,021.46
  4. Step 4: Simplify right side
    286,737.84x = 68,072,161,591.57
  5. Step 5: Solve for x
    x = 68,072,161,591.57/286,737.84
  6. Step 6: Final answer
    x = 237,402.09

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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.