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Finding the Fourth Proportional to 315,377.40, 435,277.23 and 188,061.20

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Solution

The fourth proportional to 315,377.40, 435,277.23 and 188,061.20 is: 259,558.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,377.40 : 435,277.23 = 188,061.20 : x
  2. Step 2: Convert to fraction form
    315,377.40/435,277.23 = 188,061.20/x
  3. Step 3: Cross multiply
    315,377.40x = 435,277.23 × 188,061.20
  4. Step 4: Simplify right side
    315,377.40x = 81,858,756,030.09
  5. Step 5: Solve for x
    x = 81,858,756,030.09/315,377.40
  6. Step 6: Final answer
    x = 259,558.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.