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Finding the Fourth Proportional to 321,627.20, 482,037.60 and 163,918.40

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Solution

The fourth proportional to 321,627.20, 482,037.60 and 163,918.40 is: 245,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,627.20 : 482,037.60 = 163,918.40 : x
  2. Step 2: Convert to fraction form
    321,627.20/482,037.60 = 163,918.40/x
  3. Step 3: Cross multiply
    321,627.20x = 482,037.60 × 163,918.40
  4. Step 4: Simplify right side
    321,627.20x = 79,014,832,131.84
  5. Step 5: Solve for x
    x = 79,014,832,131.84/321,627.20
  6. Step 6: Final answer
    x = 245,672.11

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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.