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Finding the Fourth Proportional to 371,645.30, 512,858.69 and 210,515.22

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Solution

The fourth proportional to 371,645.30, 512,858.69 and 210,515.22 is: 290,504.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,645.30 : 512,858.69 = 210,515.22 : x
  2. Step 2: Convert to fraction form
    371,645.30/512,858.69 = 210,515.22/x
  3. Step 3: Cross multiply
    371,645.30x = 512,858.69 × 210,515.22
  4. Step 4: Simplify right side
    371,645.30x = 107,964,559,954.26
  5. Step 5: Solve for x
    x = 107,964,559,954.26/371,645.30
  6. Step 6: Final answer
    x = 290,504.31

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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.