Home / 403,001.31-556,141.80-221,709.34

Finding the Fourth Proportional to 403,001.31, 556,141.80 and 221,709.34

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Solution

The fourth proportional to 403,001.31, 556,141.80 and 221,709.34 is: 305,958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,001.31 : 556,141.80 = 221,709.34 : x
  2. Step 2: Convert to fraction form
    403,001.31/556,141.80 = 221,709.34/x
  3. Step 3: Cross multiply
    403,001.31x = 556,141.80 × 221,709.34
  4. Step 4: Simplify right side
    403,001.31x = 123,301,831,424.41
  5. Step 5: Solve for x
    x = 123,301,831,424.41/403,001.31
  6. Step 6: Final answer
    x = 305,958.88

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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.