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Finding the Fourth Proportional to 324,063.60, 485,317.80 and 157,657.20

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Solution

The fourth proportional to 324,063.60, 485,317.80 and 157,657.20 is: 236,107.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,063.60 : 485,317.80 = 157,657.20 : x
  2. Step 2: Convert to fraction form
    324,063.60/485,317.80 = 157,657.20/x
  3. Step 3: Cross multiply
    324,063.60x = 485,317.80 × 157,657.20
  4. Step 4: Simplify right side
    324,063.60x = 76,513,845,458.16
  5. Step 5: Solve for x
    x = 76,513,845,458.16/324,063.60
  6. Step 6: Final answer
    x = 236,107.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.