Home / 289,022.90-433,526.20-78,662.66

Finding the Fourth Proportional to 289,022.90, 433,526.20 and 78,662.66

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Solution

The fourth proportional to 289,022.90, 433,526.20 and 78,662.66 is: 117,991.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,022.90 : 433,526.20 = 78,662.66 : x
  2. Step 2: Convert to fraction form
    289,022.90/433,526.20 = 78,662.66/x
  3. Step 3: Cross multiply
    289,022.90x = 433,526.20 × 78,662.66
  4. Step 4: Simplify right side
    289,022.90x = 34,102,324,071.69
  5. Step 5: Solve for x
    x = 34,102,324,071.69/289,022.90
  6. Step 6: Final answer
    x = 117,991.77

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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.