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Finding the Fourth Proportional to 187,312.40, 280,628.40 and 108,191.60

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Solution

The fourth proportional to 187,312.40, 280,628.40 and 108,191.60 is: 162,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,312.40 : 280,628.40 = 108,191.60 : x
  2. Step 2: Convert to fraction form
    187,312.40/280,628.40 = 108,191.60/x
  3. Step 3: Cross multiply
    187,312.40x = 280,628.40 × 108,191.60
  4. Step 4: Simplify right side
    187,312.40x = 30,361,635,601.44
  5. Step 5: Solve for x
    x = 30,361,635,601.44/187,312.40
  6. Step 6: Final answer
    x = 162,090.90

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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.