Home / 213,998.80-321,036.60-89,352.40

Finding the Fourth Proportional to 213,998.80, 321,036.60 and 89,352.40

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Solution

The fourth proportional to 213,998.80, 321,036.60 and 89,352.40 is: 134,044.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,998.80 : 321,036.60 = 89,352.40 : x
  2. Step 2: Convert to fraction form
    213,998.80/321,036.60 = 89,352.40/x
  3. Step 3: Cross multiply
    213,998.80x = 321,036.60 × 89,352.40
  4. Step 4: Simplify right side
    213,998.80x = 28,685,390,697.84
  5. Step 5: Solve for x
    x = 28,685,390,697.84/213,998.80
  6. Step 6: Final answer
    x = 134,044.63

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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.