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Finding the Fourth Proportional to 352,030.80, 528,046.20 and 313,323.60

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Solution

The fourth proportional to 352,030.80, 528,046.20 and 313,323.60 is: 469,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,030.80 : 528,046.20 = 313,323.60 : x
  2. Step 2: Convert to fraction form
    352,030.80/528,046.20 = 313,323.60/x
  3. Step 3: Cross multiply
    352,030.80x = 528,046.20 × 313,323.60
  4. Step 4: Simplify right side
    352,030.80x = 165,449,336,350.32
  5. Step 5: Solve for x
    x = 165,449,336,350.32/352,030.80
  6. Step 6: Final answer
    x = 469,985.40

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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.