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Finding the Fourth Proportional to 236,870.70, 355,306.05 and 143,558.70

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Solution

The fourth proportional to 236,870.70, 355,306.05 and 143,558.70 is: 215,338.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,870.70 : 355,306.05 = 143,558.70 : x
  2. Step 2: Convert to fraction form
    236,870.70/355,306.05 = 143,558.70/x
  3. Step 3: Cross multiply
    236,870.70x = 355,306.05 × 143,558.70
  4. Step 4: Simplify right side
    236,870.70x = 51,007,274,640.14
  5. Step 5: Solve for x
    x = 51,007,274,640.14/236,870.70
  6. Step 6: Final answer
    x = 215,338.05

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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.