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Finding the Fourth Proportional to 325,814.60, 488,721.90 and 314,928.20

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Solution

The fourth proportional to 325,814.60, 488,721.90 and 314,928.20 is: 472,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,814.60 : 488,721.90 = 314,928.20 : x
  2. Step 2: Convert to fraction form
    325,814.60/488,721.90 = 314,928.20/x
  3. Step 3: Cross multiply
    325,814.60x = 488,721.90 × 314,928.20
  4. Step 4: Simplify right side
    325,814.60x = 153,912,308,267.58
  5. Step 5: Solve for x
    x = 153,912,308,267.58/325,814.60
  6. Step 6: Final answer
    x = 472,392.30

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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.