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Finding the Fourth Proportional to 208,063.60, 312,095.40 and 103,087.60

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Solution

The fourth proportional to 208,063.60, 312,095.40 and 103,087.60 is: 154,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,063.60 : 312,095.40 = 103,087.60 : x
  2. Step 2: Convert to fraction form
    208,063.60/312,095.40 = 103,087.60/x
  3. Step 3: Cross multiply
    208,063.60x = 312,095.40 × 103,087.60
  4. Step 4: Simplify right side
    208,063.60x = 32,173,165,757.04
  5. Step 5: Solve for x
    x = 32,173,165,757.04/208,063.60
  6. Step 6: Final answer
    x = 154,631.40

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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.