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Finding the Fourth Proportional to 352,956.80, 528,657.60 and 313,558.40

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Solution

The fourth proportional to 352,956.80, 528,657.60 and 313,558.40 is: 469,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,956.80 : 528,657.60 = 313,558.40 : x
  2. Step 2: Convert to fraction form
    352,956.80/528,657.60 = 313,558.40/x
  3. Step 3: Cross multiply
    352,956.80x = 528,657.60 × 313,558.40
  4. Step 4: Simplify right side
    352,956.80x = 165,765,031,203.84
  5. Step 5: Solve for x
    x = 165,765,031,203.84/352,956.80
  6. Step 6: Final answer
    x = 469,646.80

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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.