Home / 215,853.60-323,780.40-145,351.20

Finding the Fourth Proportional to 215,853.60, 323,780.40 and 145,351.20

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Solution

The fourth proportional to 215,853.60, 323,780.40 and 145,351.20 is: 218,026.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,853.60 : 323,780.40 = 145,351.20 : x
  2. Step 2: Convert to fraction form
    215,853.60/323,780.40 = 145,351.20/x
  3. Step 3: Cross multiply
    215,853.60x = 323,780.40 × 145,351.20
  4. Step 4: Simplify right side
    215,853.60x = 47,061,869,676.48
  5. Step 5: Solve for x
    x = 47,061,869,676.48/215,853.60
  6. Step 6: Final answer
    x = 218,026.80

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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.