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Finding the Fourth Proportional to 321,924.80, 482,887.20 and 156,036.80

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Solution

The fourth proportional to 321,924.80, 482,887.20 and 156,036.80 is: 234,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,924.80 : 482,887.20 = 156,036.80 : x
  2. Step 2: Convert to fraction form
    321,924.80/482,887.20 = 156,036.80/x
  3. Step 3: Cross multiply
    321,924.80x = 482,887.20 × 156,036.80
  4. Step 4: Simplify right side
    321,924.80x = 75,348,173,448.96
  5. Step 5: Solve for x
    x = 75,348,173,448.96/321,924.80
  6. Step 6: Final answer
    x = 234,055.20

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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.