Home / 392,830.08-589,503.51-215,461.50

Finding the Fourth Proportional to 392,830.08, 589,503.51 and 215,461.50

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Solution

The fourth proportional to 392,830.08, 589,503.51 and 215,461.50 is: 323,333.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,830.08 : 589,503.51 = 215,461.50 : x
  2. Step 2: Convert to fraction form
    392,830.08/589,503.51 = 215,461.50/x
  3. Step 3: Cross multiply
    392,830.08x = 589,503.51 × 215,461.50
  4. Step 4: Simplify right side
    392,830.08x = 127,015,310,519.87
  5. Step 5: Solve for x
    x = 127,015,310,519.87/392,830.08
  6. Step 6: Final answer
    x = 323,333.97

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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.