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Finding the Fourth Proportional to 208,082.70, 312,124.05 and 145,097.10

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Solution

The fourth proportional to 208,082.70, 312,124.05 and 145,097.10 is: 217,645.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,082.70 : 312,124.05 = 145,097.10 : x
  2. Step 2: Convert to fraction form
    208,082.70/312,124.05 = 145,097.10/x
  3. Step 3: Cross multiply
    208,082.70x = 312,124.05 × 145,097.10
  4. Step 4: Simplify right side
    208,082.70x = 45,288,294,495.26
  5. Step 5: Solve for x
    x = 45,288,294,495.26/208,082.70
  6. Step 6: Final answer
    x = 217,645.65

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1.5x scale

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.