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Finding the Fourth Proportional to 310,586.99, 465,890.84 and 85,928.60

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Solution

The fourth proportional to 310,586.99, 465,890.84 and 85,928.60 is: 128,895.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,586.99 : 465,890.84 = 85,928.60 : x
  2. Step 2: Convert to fraction form
    310,586.99/465,890.84 = 85,928.60/x
  3. Step 3: Cross multiply
    310,586.99x = 465,890.84 × 85,928.60
  4. Step 4: Simplify right side
    310,586.99x = 40,033,347,634.02
  5. Step 5: Solve for x
    x = 40,033,347,634.02/310,586.99
  6. Step 6: Final answer
    x = 128,895.76

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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.