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Finding the Fourth Proportional to 371,995.89, 513,394.47 and 210,833.64

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Solution

The fourth proportional to 371,995.89, 513,394.47 and 210,833.64 is: 290,973.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,995.89 : 513,394.47 = 210,833.64 : x
  2. Step 2: Convert to fraction form
    371,995.89/513,394.47 = 210,833.64/x
  3. Step 3: Cross multiply
    371,995.89x = 513,394.47 × 210,833.64
  4. Step 4: Simplify right side
    371,995.89x = 108,240,824,865.97
  5. Step 5: Solve for x
    x = 108,240,824,865.97/371,995.89
  6. Step 6: Final answer
    x = 290,973.17

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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.