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Finding the Fourth Proportional to 284,214.80, 426,667.80 and 213,539.60

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Solution

The fourth proportional to 284,214.80, 426,667.80 and 213,539.60 is: 320,569.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,214.80 : 426,667.80 = 213,539.60 : x
  2. Step 2: Convert to fraction form
    284,214.80/426,667.80 = 213,539.60/x
  3. Step 3: Cross multiply
    284,214.80x = 426,667.80 × 213,539.60
  4. Step 4: Simplify right side
    284,214.80x = 91,110,471,344.88
  5. Step 5: Solve for x
    x = 91,110,471,344.88/284,214.80
  6. Step 6: Final answer
    x = 320,569.06

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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.