Home / 371,836.38-513,080.79-218,783.58

Finding the Fourth Proportional to 371,836.38, 513,080.79 and 218,783.58

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Solution

The fourth proportional to 371,836.38, 513,080.79 and 218,783.58 is: 301,889.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,836.38 : 513,080.79 = 218,783.58 : x
  2. Step 2: Convert to fraction form
    371,836.38/513,080.79 = 218,783.58/x
  3. Step 3: Cross multiply
    371,836.38x = 513,080.79 × 218,783.58
  4. Step 4: Simplify right side
    371,836.38x = 112,253,652,065.43
  5. Step 5: Solve for x
    x = 112,253,652,065.43/371,836.38
  6. Step 6: Final answer
    x = 301,889.91

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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.