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Finding the Fourth Proportional to 355,210.80, 531,941.40 and 168,003.60

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Solution

The fourth proportional to 355,210.80, 531,941.40 and 168,003.60 is: 251,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,210.80 : 531,941.40 = 168,003.60 : x
  2. Step 2: Convert to fraction form
    355,210.80/531,941.40 = 168,003.60/x
  3. Step 3: Cross multiply
    355,210.80x = 531,941.40 × 168,003.60
  4. Step 4: Simplify right side
    355,210.80x = 89,368,070,189.04
  5. Step 5: Solve for x
    x = 89,368,070,189.04/355,210.80
  6. Step 6: Final answer
    x = 251,591.65

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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.