Home / 371,913.16-513,286.70-210,820.36

Finding the Fourth Proportional to 371,913.16, 513,286.70 and 210,820.36

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Solution

The fourth proportional to 371,913.16, 513,286.70 and 210,820.36 is: 290,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,913.16 : 513,286.70 = 210,820.36 : x
  2. Step 2: Convert to fraction form
    371,913.16/513,286.70 = 210,820.36/x
  3. Step 3: Cross multiply
    371,913.16x = 513,286.70 × 210,820.36
  4. Step 4: Simplify right side
    371,913.16x = 108,211,286,877.21
  5. Step 5: Solve for x
    x = 108,211,286,877.21/371,913.16
  6. Step 6: Final answer
    x = 290,958.48

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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.