Home / 392,739.64-588,895.34-139,980.76

Finding the Fourth Proportional to 392,739.64, 588,895.34 and 139,980.76

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Solution

The fourth proportional to 392,739.64, 588,895.34 and 139,980.76 is: 209,894.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,739.64 : 588,895.34 = 139,980.76 : x
  2. Step 2: Convert to fraction form
    392,739.64/588,895.34 = 139,980.76/x
  3. Step 3: Cross multiply
    392,739.64x = 588,895.34 × 139,980.76
  4. Step 4: Simplify right side
    392,739.64x = 82,434,017,253.66
  5. Step 5: Solve for x
    x = 82,434,017,253.66/392,739.64
  6. Step 6: Final answer
    x = 209,894.82

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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.