Home / 212,728.85-319,131.23-70,582.66

Finding the Fourth Proportional to 212,728.85, 319,131.23 and 70,582.66

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Solution

The fourth proportional to 212,728.85, 319,131.23 and 70,582.66 is: 105,886.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,728.85 : 319,131.23 = 70,582.66 : x
  2. Step 2: Convert to fraction form
    212,728.85/319,131.23 = 70,582.66/x
  3. Step 3: Cross multiply
    212,728.85x = 319,131.23 × 70,582.66
  4. Step 4: Simplify right side
    212,728.85x = 22,525,129,909.57
  5. Step 5: Solve for x
    x = 22,525,129,909.57/212,728.85
  6. Step 6: Final answer
    x = 105,886.58

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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.