Home / 347,839.10-521,758.65-214,286.30

Finding the Fourth Proportional to 347,839.10, 521,758.65 and 214,286.30

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Solution

The fourth proportional to 347,839.10, 521,758.65 and 214,286.30 is: 321,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,839.10 : 521,758.65 = 214,286.30 : x
  2. Step 2: Convert to fraction form
    347,839.10/521,758.65 = 214,286.30/x
  3. Step 3: Cross multiply
    347,839.10x = 521,758.65 × 214,286.30
  4. Step 4: Simplify right side
    347,839.10x = 111,805,730,601.50
  5. Step 5: Solve for x
    x = 111,805,730,601.50/347,839.10
  6. Step 6: Final answer
    x = 321,429.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.