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Finding the Fourth Proportional to 371,446.36, 512,641.31 and 218,477.25

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Solution

The fourth proportional to 371,446.36, 512,641.31 and 218,477.25 is: 301,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,446.36 : 512,641.31 = 218,477.25 : x
  2. Step 2: Convert to fraction form
    371,446.36/512,641.31 = 218,477.25/x
  3. Step 3: Cross multiply
    371,446.36x = 512,641.31 × 218,477.25
  4. Step 4: Simplify right side
    371,446.36x = 112,000,462,552.81
  5. Step 5: Solve for x
    x = 112,000,462,552.81/371,446.36
  6. Step 6: Final answer
    x = 301,525.27

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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.