Home / 280,621.40-420,932.10-242,567.60

Finding the Fourth Proportional to 280,621.40, 420,932.10 and 242,567.60

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Solution

The fourth proportional to 280,621.40, 420,932.10 and 242,567.60 is: 363,851.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,621.40 : 420,932.10 = 242,567.60 : x
  2. Step 2: Convert to fraction form
    280,621.40/420,932.10 = 242,567.60/x
  3. Step 3: Cross multiply
    280,621.40x = 420,932.10 × 242,567.60
  4. Step 4: Simplify right side
    280,621.40x = 102,104,489,259.96
  5. Step 5: Solve for x
    x = 102,104,489,259.96/280,621.40
  6. Step 6: Final answer
    x = 363,851.40

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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.