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Finding the Fourth Proportional to 260,504.99, 390,753.23 and 83,009.60

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Solution

The fourth proportional to 260,504.99, 390,753.23 and 83,009.60 is: 124,513.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,504.99 : 390,753.23 = 83,009.60 : x
  2. Step 2: Convert to fraction form
    260,504.99/390,753.23 = 83,009.60/x
  3. Step 3: Cross multiply
    260,504.99x = 390,753.23 × 83,009.60
  4. Step 4: Simplify right side
    260,504.99x = 32,436,266,952.19
  5. Step 5: Solve for x
    x = 32,436,266,952.19/260,504.99
  6. Step 6: Final answer
    x = 124,513.04

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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.