Home / 399,822.34-551,762.68-218,529.22

Finding the Fourth Proportional to 399,822.34, 551,762.68 and 218,529.22

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Solution

The fourth proportional to 399,822.34, 551,762.68 and 218,529.22 is: 301,574.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,822.34 : 551,762.68 = 218,529.22 : x
  2. Step 2: Convert to fraction form
    399,822.34/551,762.68 = 218,529.22/x
  3. Step 3: Cross multiply
    399,822.34x = 551,762.68 × 218,529.22
  4. Step 4: Simplify right side
    399,822.34x = 120,576,268,085.51
  5. Step 5: Solve for x
    x = 120,576,268,085.51/399,822.34
  6. Step 6: Final answer
    x = 301,574.61

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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.