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Finding the Fourth Proportional to 216,368.64, 324,552.96 and 83,311.56

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Solution

The fourth proportional to 216,368.64, 324,552.96 and 83,311.56 is: 124,967.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,368.64 : 324,552.96 = 83,311.56 : x
  2. Step 2: Convert to fraction form
    216,368.64/324,552.96 = 83,311.56/x
  3. Step 3: Cross multiply
    216,368.64x = 324,552.96 × 83,311.56
  4. Step 4: Simplify right side
    216,368.64x = 27,039,013,400.22
  5. Step 5: Solve for x
    x = 27,039,013,400.22/216,368.64
  6. Step 6: Final answer
    x = 124,967.34

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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.