Home / 429,000.27-643,669.90-162,831.44

Finding the Fourth Proportional to 429,000.27, 643,669.90 and 162,831.44

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Solution

The fourth proportional to 429,000.27, 643,669.90 and 162,831.44 is: 244,311.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,000.27 : 643,669.90 = 162,831.44 : x
  2. Step 2: Convert to fraction form
    429,000.27/643,669.90 = 162,831.44/x
  3. Step 3: Cross multiply
    429,000.27x = 643,669.90 × 162,831.44
  4. Step 4: Simplify right side
    429,000.27x = 104,809,693,076.23
  5. Step 5: Solve for x
    x = 104,809,693,076.23/429,000.27
  6. Step 6: Final answer
    x = 244,311.49

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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.