Home / 316,398.40-436,629.96-173,158.36

Finding the Fourth Proportional to 316,398.40, 436,629.96 and 173,158.36

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Solution

The fourth proportional to 316,398.40, 436,629.96 and 173,158.36 is: 238,958.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,398.40 : 436,629.96 = 173,158.36 : x
  2. Step 2: Convert to fraction form
    316,398.40/436,629.96 = 173,158.36/x
  3. Step 3: Cross multiply
    316,398.40x = 436,629.96 × 173,158.36
  4. Step 4: Simplify right side
    316,398.40x = 75,606,127,800.47
  5. Step 5: Solve for x
    x = 75,606,127,800.47/316,398.40
  6. Step 6: Final answer
    x = 238,958.63

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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.