Home / 280,051,396.80-420,077,095.20-178,266,667.20

Finding the Fourth Proportional to 280,051,396.80, 420,077,095.20 and 178,266,667.20

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Solution

The fourth proportional to 280,051,396.80, 420,077,095.20 and 178,266,667.20 is: 267,400,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,051,396.80 : 420,077,095.20 = 178,266,667.20 : x
  2. Step 2: Convert to fraction form
    280,051,396.80/420,077,095.20 = 178,266,667.20/x
  3. Step 3: Cross multiply
    280,051,396.80x = 420,077,095.20 × 178,266,667.20
  4. Step 4: Simplify right side
    280,051,396.80x = 74,885,743,728,361,104
  5. Step 5: Solve for x
    x = 74,885,743,728,361,104/280,051,396.80
  6. Step 6: Final answer
    x = 267,400,000.80

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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.