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Finding the Fourth Proportional to 316,662.96, 436,985.10 and 173,419.32

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Solution

The fourth proportional to 316,662.96, 436,985.10 and 173,419.32 is: 239,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,662.96 : 436,985.10 = 173,419.32 : x
  2. Step 2: Convert to fraction form
    316,662.96/436,985.10 = 173,419.32/x
  3. Step 3: Cross multiply
    316,662.96x = 436,985.10 × 173,419.32
  4. Step 4: Simplify right side
    316,662.96x = 75,781,658,892.13
  5. Step 5: Solve for x
    x = 75,781,658,892.13/316,662.96
  6. Step 6: Final answer
    x = 239,313.30

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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.