Home / 316,402.91-436,636.74-173,172.20

Finding the Fourth Proportional to 316,402.91, 436,636.74 and 173,172.20

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Solution

The fourth proportional to 316,402.91, 436,636.74 and 173,172.20 is: 238,978.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,402.91 : 436,636.74 = 173,172.20 : x
  2. Step 2: Convert to fraction form
    316,402.91/436,636.74 = 173,172.20/x
  3. Step 3: Cross multiply
    316,402.91x = 436,636.74 × 173,172.20
  4. Step 4: Simplify right side
    316,402.91x = 75,613,343,332.84
  5. Step 5: Solve for x
    x = 75,613,343,332.84/316,402.91
  6. Step 6: Final answer
    x = 238,978.03

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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.