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Finding the Fourth Proportional to 216,901.80, 324,719.10 and 154,693.80

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Solution

The fourth proportional to 216,901.80, 324,719.10 and 154,693.80 is: 231,588.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,901.80 : 324,719.10 = 154,693.80 : x
  2. Step 2: Convert to fraction form
    216,901.80/324,719.10 = 154,693.80/x
  3. Step 3: Cross multiply
    216,901.80x = 324,719.10 × 154,693.80
  4. Step 4: Simplify right side
    216,901.80x = 50,232,031,511.58
  5. Step 5: Solve for x
    x = 50,232,031,511.58/216,901.80
  6. Step 6: Final answer
    x = 231,588.82

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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.