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Finding the Fourth Proportional to 216,378.40, 324,530.64 and 58,570

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Solution

The fourth proportional to 216,378.40, 324,530.64 and 58,570 is: 87,845.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,378.40 : 324,530.64 = 58,570 : x
  2. Step 2: Convert to fraction form
    216,378.40/324,530.64 = 58,570/x
  3. Step 3: Cross multiply
    216,378.40x = 324,530.64 × 58,570
  4. Step 4: Simplify right side
    216,378.40x = 19,007,759,584.80
  5. Step 5: Solve for x
    x = 19,007,759,584.80/216,378.40
  6. Step 6: Final answer
    x = 87,845.00

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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.