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Finding the Fourth Proportional to 219,399.40, 329,063.90 and 79,085.80

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Solution

The fourth proportional to 219,399.40, 329,063.90 and 79,085.80 is: 118,616.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,399.40 : 329,063.90 = 79,085.80 : x
  2. Step 2: Convert to fraction form
    219,399.40/329,063.90 = 79,085.80/x
  3. Step 3: Cross multiply
    219,399.40x = 329,063.90 × 79,085.80
  4. Step 4: Simplify right side
    219,399.40x = 26,024,281,782.62
  5. Step 5: Solve for x
    x = 26,024,281,782.62/219,399.40
  6. Step 6: Final answer
    x = 118,616.01

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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.