Home / 215,804.48-321,355.54-213,445.76

Finding the Fourth Proportional to 215,804.48, 321,355.54 and 213,445.76

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Solution

The fourth proportional to 215,804.48, 321,355.54 and 213,445.76 is: 317,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,804.48 : 321,355.54 = 213,445.76 : x
  2. Step 2: Convert to fraction form
    215,804.48/321,355.54 = 213,445.76/x
  3. Step 3: Cross multiply
    215,804.48x = 321,355.54 × 213,445.76
  4. Step 4: Simplify right side
    215,804.48x = 68,591,977,465.51
  5. Step 5: Solve for x
    x = 68,591,977,465.51/215,804.48
  6. Step 6: Final answer
    x = 317,843.16

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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.