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Finding the Fourth Proportional to 371,319.45, 512,383.44 and 210,146.43

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Solution

The fourth proportional to 371,319.45, 512,383.44 and 210,146.43 is: 289,980.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,319.45 : 512,383.44 = 210,146.43 : x
  2. Step 2: Convert to fraction form
    371,319.45/512,383.44 = 210,146.43/x
  3. Step 3: Cross multiply
    371,319.45x = 512,383.44 × 210,146.43
  4. Step 4: Simplify right side
    371,319.45x = 107,675,551,840.51
  5. Step 5: Solve for x
    x = 107,675,551,840.51/371,319.45
  6. Step 6: Final answer
    x = 289,980.91

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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.