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Finding the Fourth Proportional to 216,578.94, 324,923.76 and 83,423.45

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Solution

The fourth proportional to 216,578.94, 324,923.76 and 83,423.45 is: 125,156.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,578.94 : 324,923.76 = 83,423.45 : x
  2. Step 2: Convert to fraction form
    216,578.94/324,923.76 = 83,423.45/x
  3. Step 3: Cross multiply
    216,578.94x = 324,923.76 × 83,423.45
  4. Step 4: Simplify right side
    216,578.94x = 27,106,259,421.55
  5. Step 5: Solve for x
    x = 27,106,259,421.55/216,578.94
  6. Step 6: Final answer
    x = 125,156.49

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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.