Home / 399,895.18-551,856.44-218,609.28

Finding the Fourth Proportional to 399,895.18, 551,856.44 and 218,609.28

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Solution

The fourth proportional to 399,895.18, 551,856.44 and 218,609.28 is: 301,681.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,895.18 : 551,856.44 = 218,609.28 : x
  2. Step 2: Convert to fraction form
    399,895.18/551,856.44 = 218,609.28/x
  3. Step 3: Cross multiply
    399,895.18x = 551,856.44 × 218,609.28
  4. Step 4: Simplify right side
    399,895.18x = 120,640,939,558.29
  5. Step 5: Solve for x
    x = 120,640,939,558.29/399,895.18
  6. Step 6: Final answer
    x = 301,681.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.