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Finding the Fourth Proportional to 316,659.96, 436,980.96 and 173,416.32

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Solution

The fourth proportional to 316,659.96, 436,980.96 and 173,416.32 is: 239,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,659.96 : 436,980.96 = 173,416.32 : x
  2. Step 2: Convert to fraction form
    316,659.96/436,980.96 = 173,416.32/x
  3. Step 3: Cross multiply
    316,659.96x = 436,980.96 × 173,416.32
  4. Step 4: Simplify right side
    316,659.96x = 75,779,629,993.27
  5. Step 5: Solve for x
    x = 75,779,629,993.27/316,659.96
  6. Step 6: Final answer
    x = 239,309.16

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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.