Home / 399,861.41-551,808.77-218,574.05

Finding the Fourth Proportional to 399,861.41, 551,808.77 and 218,574.05

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Solution

The fourth proportional to 399,861.41, 551,808.77 and 218,574.05 is: 301,632.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,861.41 : 551,808.77 = 218,574.05 : x
  2. Step 2: Convert to fraction form
    399,861.41/551,808.77 = 218,574.05/x
  3. Step 3: Cross multiply
    399,861.41x = 551,808.77 × 218,574.05
  4. Step 4: Simplify right side
    399,861.41x = 120,611,077,971.07
  5. Step 5: Solve for x
    x = 120,611,077,971.07/399,861.41
  6. Step 6: Final answer
    x = 301,632.21

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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.