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Finding the Fourth Proportional to 260,666.96, 390,993.60 and 83,184.80

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Solution

The fourth proportional to 260,666.96, 390,993.60 and 83,184.80 is: 124,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,666.96 : 390,993.60 = 83,184.80 : x
  2. Step 2: Convert to fraction form
    260,666.96/390,993.60 = 83,184.80/x
  3. Step 3: Cross multiply
    260,666.96x = 390,993.60 × 83,184.80
  4. Step 4: Simplify right side
    260,666.96x = 32,524,724,417.28
  5. Step 5: Solve for x
    x = 32,524,724,417.28/260,666.96
  6. Step 6: Final answer
    x = 124,775.02

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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.