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Finding the Fourth Proportional to 312,476.48, 468,736.64 and 125,488

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Solution

The fourth proportional to 312,476.48, 468,736.64 and 125,488 is: 188,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,476.48 : 468,736.64 = 125,488 : x
  2. Step 2: Convert to fraction form
    312,476.48/468,736.64 = 125,488/x
  3. Step 3: Cross multiply
    312,476.48x = 468,736.64 × 125,488
  4. Step 4: Simplify right side
    312,476.48x = 58,820,823,480.32
  5. Step 5: Solve for x
    x = 58,820,823,480.32/312,476.48
  6. Step 6: Final answer
    x = 188,240.80

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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.