Home / 214,259.40-321,429.71-86,185.48

Finding the Fourth Proportional to 214,259.40, 321,429.71 and 86,185.48

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Solution

The fourth proportional to 214,259.40, 321,429.71 and 86,185.48 is: 129,294.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,259.40 : 321,429.71 = 86,185.48 : x
  2. Step 2: Convert to fraction form
    214,259.40/321,429.71 = 86,185.48/x
  3. Step 3: Cross multiply
    214,259.40x = 321,429.71 × 86,185.48
  4. Step 4: Simplify right side
    214,259.40x = 27,702,573,842.61
  5. Step 5: Solve for x
    x = 27,702,573,842.61/214,259.40
  6. Step 6: Final answer
    x = 129,294.56

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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.