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Finding the Fourth Proportional to 371,796.84, 513,038 and 210,617.38

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Solution

The fourth proportional to 371,796.84, 513,038 and 210,617.38 is: 290,628.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,796.84 : 513,038 = 210,617.38 : x
  2. Step 2: Convert to fraction form
    371,796.84/513,038 = 210,617.38/x
  3. Step 3: Cross multiply
    371,796.84x = 513,038 × 210,617.38
  4. Step 4: Simplify right side
    371,796.84x = 108,054,719,400.44
  5. Step 5: Solve for x
    x = 108,054,719,400.44/371,796.84
  6. Step 6: Final answer
    x = 290,628.40

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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.