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Finding the Fourth Proportional to 207,155.79, 309,012.39 and 203,730.39

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Solution

The fourth proportional to 207,155.79, 309,012.39 and 203,730.39 is: 303,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,155.79 : 309,012.39 = 203,730.39 : x
  2. Step 2: Convert to fraction form
    207,155.79/309,012.39 = 203,730.39/x
  3. Step 3: Cross multiply
    207,155.79x = 309,012.39 × 203,730.39
  4. Step 4: Simplify right side
    207,155.79x = 62,955,214,729.53
  5. Step 5: Solve for x
    x = 62,955,214,729.53/207,155.79
  6. Step 6: Final answer
    x = 303,902.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.