Home / 399,719.60-551,669.30-254,478.98

Finding the Fourth Proportional to 399,719.60, 551,669.30 and 254,478.98

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Solution

The fourth proportional to 399,719.60, 551,669.30 and 254,478.98 is: 351,216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,719.60 : 551,669.30 = 254,478.98 : x
  2. Step 2: Convert to fraction form
    399,719.60/551,669.30 = 254,478.98/x
  3. Step 3: Cross multiply
    399,719.60x = 551,669.30 × 254,478.98
  4. Step 4: Simplify right side
    399,719.60x = 140,388,243,253.83
  5. Step 5: Solve for x
    x = 140,388,243,253.83/399,719.60
  6. Step 6: Final answer
    x = 351,216.81

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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.