Home / 392,670.18-589,005.20-112,187.43

Finding the Fourth Proportional to 392,670.18, 589,005.20 and 112,187.43

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Solution

The fourth proportional to 392,670.18, 589,005.20 and 112,187.43 is: 168,281.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,670.18 : 589,005.20 = 112,187.43 : x
  2. Step 2: Convert to fraction form
    392,670.18/589,005.20 = 112,187.43/x
  3. Step 3: Cross multiply
    392,670.18x = 589,005.20 × 112,187.43
  4. Step 4: Simplify right side
    392,670.18x = 66,078,979,925.10
  5. Step 5: Solve for x
    x = 66,078,979,925.10/392,670.18
  6. Step 6: Final answer
    x = 168,281.13

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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.