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Finding the Fourth Proportional to 358,755, 495,081.90 and 207,939.48

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Solution

The fourth proportional to 358,755, 495,081.90 and 207,939.48 is: 286,956.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,755 : 495,081.90 = 207,939.48 : x
  2. Step 2: Convert to fraction form
    358,755/495,081.90 = 207,939.48/x
  3. Step 3: Cross multiply
    358,755x = 495,081.90 × 207,939.48
  4. Step 4: Simplify right side
    358,755x = 102,947,072,843.41
  5. Step 5: Solve for x
    x = 102,947,072,843.41/358,755
  6. Step 6: Final answer
    x = 286,956.48

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1.5x scale

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.