Home / 215,803.48-321,354.05-213,444.76

Finding the Fourth Proportional to 215,803.48, 321,354.05 and 213,444.76

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Solution

The fourth proportional to 215,803.48, 321,354.05 and 213,444.76 is: 317,841.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,803.48 : 321,354.05 = 213,444.76 : x
  2. Step 2: Convert to fraction form
    215,803.48/321,354.05 = 213,444.76/x
  3. Step 3: Cross multiply
    215,803.48x = 321,354.05 × 213,444.76
  4. Step 4: Simplify right side
    215,803.48x = 68,591,338,077.28
  5. Step 5: Solve for x
    x = 68,591,338,077.28/215,803.48
  6. Step 6: Final answer
    x = 317,841.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.