Home / 316,225.29-436,390.76-172,985.30

Finding the Fourth Proportional to 316,225.29, 436,390.76 and 172,985.30

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Solution

The fourth proportional to 316,225.29, 436,390.76 and 172,985.30 is: 238,719.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,225.29 : 436,390.76 = 172,985.30 : x
  2. Step 2: Convert to fraction form
    316,225.29/436,390.76 = 172,985.30/x
  3. Step 3: Cross multiply
    316,225.29x = 436,390.76 × 172,985.30
  4. Step 4: Simplify right side
    316,225.29x = 75,489,185,774.11
  5. Step 5: Solve for x
    x = 75,489,185,774.11/316,225.29
  6. Step 6: Final answer
    x = 238,719.63

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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.