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Finding the Fourth Proportional to 216,881.36, 324,848.22 and 90,137.32

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Solution

The fourth proportional to 216,881.36, 324,848.22 and 90,137.32 is: 135,009.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,881.36 : 324,848.22 = 90,137.32 : x
  2. Step 2: Convert to fraction form
    216,881.36/324,848.22 = 90,137.32/x
  3. Step 3: Cross multiply
    216,881.36x = 324,848.22 × 90,137.32
  4. Step 4: Simplify right side
    216,881.36x = 29,280,947,957.57
  5. Step 5: Solve for x
    x = 29,280,947,957.57/216,881.36
  6. Step 6: Final answer
    x = 135,009.06

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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.