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Finding the Fourth Proportional to 289,085.70, 433,520.67 and 99,492.90

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Solution

The fourth proportional to 289,085.70, 433,520.67 and 99,492.90 is: 149,202.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,085.70 : 433,520.67 = 99,492.90 : x
  2. Step 2: Convert to fraction form
    289,085.70/433,520.67 = 99,492.90/x
  3. Step 3: Cross multiply
    289,085.70x = 433,520.67 × 99,492.90
  4. Step 4: Simplify right side
    289,085.70x = 43,132,228,668.24
  5. Step 5: Solve for x
    x = 43,132,228,668.24/289,085.70
  6. Step 6: Final answer
    x = 149,202.22

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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.