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Finding the Fourth Proportional to 358,928, 495,320.64 and 208,112.48

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Solution

The fourth proportional to 358,928, 495,320.64 and 208,112.48 is: 287,195.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,928 : 495,320.64 = 208,112.48 : x
  2. Step 2: Convert to fraction form
    358,928/495,320.64 = 208,112.48/x
  3. Step 3: Cross multiply
    358,928x = 495,320.64 × 208,112.48
  4. Step 4: Simplify right side
    358,928x = 103,082,406,785.59
  5. Step 5: Solve for x
    x = 103,082,406,785.59/358,928
  6. Step 6: Final answer
    x = 287,195.22

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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.