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Finding the Fourth Proportional to 260,504.34, 390,752.39 and 83,008.81

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Solution

The fourth proportional to 260,504.34, 390,752.39 and 83,008.81 is: 124,511.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,504.34 : 390,752.39 = 83,008.81 : x
  2. Step 2: Convert to fraction form
    260,504.34/390,752.39 = 83,008.81/x
  3. Step 3: Cross multiply
    260,504.34x = 390,752.39 × 83,008.81
  4. Step 4: Simplify right side
    260,504.34x = 32,435,890,129.20
  5. Step 5: Solve for x
    x = 32,435,890,129.20/260,504.34
  6. Step 6: Final answer
    x = 124,511.90

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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.