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Finding the Fourth Proportional to 216,021.70, 324,421.35 and 156,924.10

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Solution

The fourth proportional to 216,021.70, 324,421.35 and 156,924.10 is: 235,668.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,021.70 : 324,421.35 = 156,924.10 : x
  2. Step 2: Convert to fraction form
    216,021.70/324,421.35 = 156,924.10/x
  3. Step 3: Cross multiply
    216,021.70x = 324,421.35 × 156,924.10
  4. Step 4: Simplify right side
    216,021.70x = 50,909,528,369.54
  5. Step 5: Solve for x
    x = 50,909,528,369.54/216,021.70
  6. Step 6: Final answer
    x = 235,668.59

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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.