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Finding the Fourth Proportional to 815,532.84, 1,223,352.57 and 216,478.00

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Solution

The fourth proportional to 815,532.84, 1,223,352.57 and 216,478.00 is: 324,731.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,532.84 : 1,223,352.57 = 216,478.00 : x
  2. Step 2: Convert to fraction form
    815,532.84/1,223,352.57 = 216,478.00/x
  3. Step 3: Cross multiply
    815,532.84x = 1,223,352.57 × 216,478.00
  4. Step 4: Simplify right side
    815,532.84x = 264,828,918,771.75
  5. Step 5: Solve for x
    x = 264,828,918,771.75/815,532.84
  6. Step 6: Final answer
    x = 324,731.15

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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.