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Finding the Fourth Proportional to 260,027.80, 390,041.70 and 82,548.70

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Solution

The fourth proportional to 260,027.80, 390,041.70 and 82,548.70 is: 123,823.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,027.80 : 390,041.70 = 82,548.70 : x
  2. Step 2: Convert to fraction form
    260,027.80/390,041.70 = 82,548.70/x
  3. Step 3: Cross multiply
    260,027.80x = 390,041.70 × 82,548.70
  4. Step 4: Simplify right side
    260,027.80x = 32,197,435,280.79
  5. Step 5: Solve for x
    x = 32,197,435,280.79/260,027.80
  6. Step 6: Final answer
    x = 123,823.05

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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.