Home / 438,783.21-658,417.68-214,145.51

Finding the Fourth Proportional to 438,783.21, 658,417.68 and 214,145.51

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Solution

The fourth proportional to 438,783.21, 658,417.68 and 214,145.51 is: 321,336.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,783.21 : 658,417.68 = 214,145.51 : x
  2. Step 2: Convert to fraction form
    438,783.21/658,417.68 = 214,145.51/x
  3. Step 3: Cross multiply
    438,783.21x = 658,417.68 × 214,145.51
  4. Step 4: Simplify right side
    438,783.21x = 140,997,186,584.53
  5. Step 5: Solve for x
    x = 140,997,186,584.53/438,783.21
  6. Step 6: Final answer
    x = 321,336.79

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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.