Home / 392,931.60-589,337.26-126,664.36

Finding the Fourth Proportional to 392,931.60, 589,337.26 and 126,664.36

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Solution

The fourth proportional to 392,931.60, 589,337.26 and 126,664.36 is: 189,977.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,931.60 : 589,337.26 = 126,664.36 : x
  2. Step 2: Convert to fraction form
    392,931.60/589,337.26 = 126,664.36/x
  3. Step 3: Cross multiply
    392,931.60x = 589,337.26 × 126,664.36
  4. Step 4: Simplify right side
    392,931.60x = 74,648,026,862.05
  5. Step 5: Solve for x
    x = 74,648,026,862.05/392,931.60
  6. Step 6: Final answer
    x = 189,977.15

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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.