Home / 321,975.20-482,962.80-316,445.60

Finding the Fourth Proportional to 321,975.20, 482,962.80 and 316,445.60

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Solution

The fourth proportional to 321,975.20, 482,962.80 and 316,445.60 is: 474,668.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,975.20 : 482,962.80 = 316,445.60 : x
  2. Step 2: Convert to fraction form
    321,975.20/482,962.80 = 316,445.60/x
  3. Step 3: Cross multiply
    321,975.20x = 482,962.80 × 316,445.60
  4. Step 4: Simplify right side
    321,975.20x = 152,831,453,023.68
  5. Step 5: Solve for x
    x = 152,831,453,023.68/321,975.20
  6. Step 6: Final answer
    x = 474,668.40

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Similar ratio
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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.