Home / 310,836.81-428,725.20-214,071.42

Finding the Fourth Proportional to 310,836.81, 428,725.20 and 214,071.42

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Solution

The fourth proportional to 310,836.81, 428,725.20 and 214,071.42 is: 295,260.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,836.81 : 428,725.20 = 214,071.42 : x
  2. Step 2: Convert to fraction form
    310,836.81/428,725.20 = 214,071.42/x
  3. Step 3: Cross multiply
    310,836.81x = 428,725.20 × 214,071.42
  4. Step 4: Simplify right side
    310,836.81x = 91,777,812,353.78
  5. Step 5: Solve for x
    x = 91,777,812,353.78/310,836.81
  6. Step 6: Final answer
    x = 295,260.44

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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.