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Finding the Fourth Proportional to 280,656.90, 422,022.15 and 235,037.70

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Solution

The fourth proportional to 280,656.90, 422,022.15 and 235,037.70 is: 353,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,656.90 : 422,022.15 = 235,037.70 : x
  2. Step 2: Convert to fraction form
    280,656.90/422,022.15 = 235,037.70/x
  3. Step 3: Cross multiply
    280,656.90x = 422,022.15 × 235,037.70
  4. Step 4: Simplify right side
    280,656.90x = 99,191,115,485.06
  5. Step 5: Solve for x
    x = 99,191,115,485.06/280,656.90
  6. Step 6: Final answer
    x = 353,424.82

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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.