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Finding the Fourth Proportional to 215,384.80, 323,422.80 and 145,573.60

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Solution

The fourth proportional to 215,384.80, 323,422.80 and 145,573.60 is: 218,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,384.80 : 323,422.80 = 145,573.60 : x
  2. Step 2: Convert to fraction form
    215,384.80/323,422.80 = 145,573.60/x
  3. Step 3: Cross multiply
    215,384.80x = 323,422.80 × 145,573.60
  4. Step 4: Simplify right side
    215,384.80x = 47,081,821,318.08
  5. Step 5: Solve for x
    x = 47,081,821,318.08/215,384.80
  6. Step 6: Final answer
    x = 218,593.98

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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.