Home / 212,912.90-319,590.78-156,816.35

Finding the Fourth Proportional to 212,912.90, 319,590.78 and 156,816.35

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Solution

The fourth proportional to 212,912.90, 319,590.78 and 156,816.35 is: 235,387.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,912.90 : 319,590.78 = 156,816.35 : x
  2. Step 2: Convert to fraction form
    212,912.90/319,590.78 = 156,816.35/x
  3. Step 3: Cross multiply
    212,912.90x = 319,590.78 × 156,816.35
  4. Step 4: Simplify right side
    212,912.90x = 50,117,058,015.30
  5. Step 5: Solve for x
    x = 50,117,058,015.30/212,912.90
  6. Step 6: Final answer
    x = 235,387.61

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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.