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Finding the Fourth Proportional to 460,861.60, 691,292.40 and 145,415.20

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Solution

The fourth proportional to 460,861.60, 691,292.40 and 145,415.20 is: 218,122.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,861.60 : 691,292.40 = 145,415.20 : x
  2. Step 2: Convert to fraction form
    460,861.60/691,292.40 = 145,415.20/x
  3. Step 3: Cross multiply
    460,861.60x = 691,292.40 × 145,415.20
  4. Step 4: Simplify right side
    460,861.60x = 100,524,422,604.48
  5. Step 5: Solve for x
    x = 100,524,422,604.48/460,861.60
  6. Step 6: Final answer
    x = 218,122.80

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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.