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Finding the Fourth Proportional to 352,037.80, 528,056.70 and 313,330.60

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Solution

The fourth proportional to 352,037.80, 528,056.70 and 313,330.60 is: 469,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,037.80 : 528,056.70 = 313,330.60 : x
  2. Step 2: Convert to fraction form
    352,037.80/528,056.70 = 313,330.60/x
  3. Step 3: Cross multiply
    352,037.80x = 528,056.70 × 313,330.60
  4. Step 4: Simplify right side
    352,037.80x = 165,456,322,645.02
  5. Step 5: Solve for x
    x = 165,456,322,645.02/352,037.80
  6. Step 6: Final answer
    x = 469,995.90

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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.