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Finding the Fourth Proportional to 358,774.81, 495,111.77 and 205,819.68

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Solution

The fourth proportional to 358,774.81, 495,111.77 and 205,819.68 is: 284,032.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,774.81 : 495,111.77 = 205,819.68 : x
  2. Step 2: Convert to fraction form
    358,774.81/495,111.77 = 205,819.68/x
  3. Step 3: Cross multiply
    358,774.81x = 495,111.77 × 205,819.68
  4. Step 4: Simplify right side
    358,774.81x = 101,903,746,065.63
  5. Step 5: Solve for x
    x = 101,903,746,065.63/358,774.81
  6. Step 6: Final answer
    x = 284,032.61

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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.