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Finding the Fourth Proportional to 330,242.76, 455,725.80 and 187,016.40

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Solution

The fourth proportional to 330,242.76, 455,725.80 and 187,016.40 is: 258,077.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,242.76 : 455,725.80 = 187,016.40 : x
  2. Step 2: Convert to fraction form
    330,242.76/455,725.80 = 187,016.40/x
  3. Step 3: Cross multiply
    330,242.76x = 455,725.80 × 187,016.40
  4. Step 4: Simplify right side
    330,242.76x = 85,228,198,503.12
  5. Step 5: Solve for x
    x = 85,228,198,503.12/330,242.76
  6. Step 6: Final answer
    x = 258,077.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.