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Finding the Fourth Proportional to 313,422.30, 470,133.45 and 189,006.30

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Solution

The fourth proportional to 313,422.30, 470,133.45 and 189,006.30 is: 283,509.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,422.30 : 470,133.45 = 189,006.30 : x
  2. Step 2: Convert to fraction form
    313,422.30/470,133.45 = 189,006.30/x
  3. Step 3: Cross multiply
    313,422.30x = 470,133.45 × 189,006.30
  4. Step 4: Simplify right side
    313,422.30x = 88,858,183,890.74
  5. Step 5: Solve for x
    x = 88,858,183,890.74/313,422.30
  6. Step 6: Final answer
    x = 283,509.45

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Similar ratio
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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.