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Finding the Fourth Proportional to 208,309.40, 312,464.10 and 183,377.60

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Solution

The fourth proportional to 208,309.40, 312,464.10 and 183,377.60 is: 275,066.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,309.40 : 312,464.10 = 183,377.60 : x
  2. Step 2: Convert to fraction form
    208,309.40/312,464.10 = 183,377.60/x
  3. Step 3: Cross multiply
    208,309.40x = 312,464.10 × 183,377.60
  4. Step 4: Simplify right side
    208,309.40x = 57,298,916,744.16
  5. Step 5: Solve for x
    x = 57,298,916,744.16/208,309.40
  6. Step 6: Final answer
    x = 275,066.40

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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.