Home / 215,972.40-323,958.60-145,113.60

Finding the Fourth Proportional to 215,972.40, 323,958.60 and 145,113.60

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Solution

The fourth proportional to 215,972.40, 323,958.60 and 145,113.60 is: 217,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,972.40 : 323,958.60 = 145,113.60 : x
  2. Step 2: Convert to fraction form
    215,972.40/323,958.60 = 145,113.60/x
  3. Step 3: Cross multiply
    215,972.40x = 323,958.60 × 145,113.60
  4. Step 4: Simplify right side
    215,972.40x = 47,010,798,696.96
  5. Step 5: Solve for x
    x = 47,010,798,696.96/215,972.40
  6. Step 6: Final answer
    x = 217,670.40

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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.