Home / 421,082.10-631,822.37-218,570.58

Finding the Fourth Proportional to 421,082.10, 631,822.37 and 218,570.58

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Solution

The fourth proportional to 421,082.10, 631,822.37 and 218,570.58 is: 327,959.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,082.10 : 631,822.37 = 218,570.58 : x
  2. Step 2: Convert to fraction form
    421,082.10/631,822.37 = 218,570.58/x
  3. Step 3: Cross multiply
    421,082.10x = 631,822.37 × 218,570.58
  4. Step 4: Simplify right side
    421,082.10x = 138,097,780,775.02
  5. Step 5: Solve for x
    x = 138,097,780,775.02/421,082.10
  6. Step 6: Final answer
    x = 327,959.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.