Home / 214,579.40-321,869.10-125,875.40

Finding the Fourth Proportional to 214,579.40, 321,869.10 and 125,875.40

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Solution

The fourth proportional to 214,579.40, 321,869.10 and 125,875.40 is: 188,813.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,579.40 : 321,869.10 = 125,875.40 : x
  2. Step 2: Convert to fraction form
    214,579.40/321,869.10 = 125,875.40/x
  3. Step 3: Cross multiply
    214,579.40x = 321,869.10 × 125,875.40
  4. Step 4: Simplify right side
    214,579.40x = 40,515,401,710.14
  5. Step 5: Solve for x
    x = 40,515,401,710.14/214,579.40
  6. Step 6: Final answer
    x = 188,813.10

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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.