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Finding the Fourth Proportional to 358,978.07, 495,400.13 and 197,843.51

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Solution

The fourth proportional to 358,978.07, 495,400.13 and 197,843.51 is: 273,029.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,978.07 : 495,400.13 = 197,843.51 : x
  2. Step 2: Convert to fraction form
    358,978.07/495,400.13 = 197,843.51/x
  3. Step 3: Cross multiply
    358,978.07x = 495,400.13 × 197,843.51
  4. Step 4: Simplify right side
    358,978.07x = 98,011,700,573.66
  5. Step 5: Solve for x
    x = 98,011,700,573.66/358,978.07
  6. Step 6: Final answer
    x = 273,029.77

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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.