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Finding the Fourth Proportional to 145,404.70, 218,107.04 and 40,220.94

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Solution

The fourth proportional to 145,404.70, 218,107.04 and 40,220.94 is: 60,331.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,404.70 : 218,107.04 = 40,220.94 : x
  2. Step 2: Convert to fraction form
    145,404.70/218,107.04 = 40,220.94/x
  3. Step 3: Cross multiply
    145,404.70x = 218,107.04 × 40,220.94
  4. Step 4: Simplify right side
    145,404.70x = 8,772,470,169.42
  5. Step 5: Solve for x
    x = 8,772,470,169.42/145,404.70
  6. Step 6: Final answer
    x = 60,331.41

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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.