Home / 422,929.18-634,381.62-156,683.80

Finding the Fourth Proportional to 422,929.18, 634,381.62 and 156,683.80

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Solution

The fourth proportional to 422,929.18, 634,381.62 and 156,683.80 is: 235,021.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,929.18 : 634,381.62 = 156,683.80 : x
  2. Step 2: Convert to fraction form
    422,929.18/634,381.62 = 156,683.80/x
  3. Step 3: Cross multiply
    422,929.18x = 634,381.62 × 156,683.80
  4. Step 4: Simplify right side
    422,929.18x = 99,397,322,871.76
  5. Step 5: Solve for x
    x = 99,397,322,871.76/422,929.18
  6. Step 6: Final answer
    x = 235,021.20

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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.