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Finding the Fourth Proportional to 316,609.16, 436,920.48 and 173,369.12

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Solution

The fourth proportional to 316,609.16, 436,920.48 and 173,369.12 is: 239,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,609.16 : 436,920.48 = 173,369.12 : x
  2. Step 2: Convert to fraction form
    316,609.16/436,920.48 = 173,369.12/x
  3. Step 3: Cross multiply
    316,609.16x = 436,920.48 × 173,369.12
  4. Step 4: Simplify right side
    316,609.16x = 75,748,519,127.58
  5. Step 5: Solve for x
    x = 75,748,519,127.58/316,609.16
  6. Step 6: Final answer
    x = 239,249.30

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1.5x scale

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.