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Finding the Fourth Proportional to 358,834.56, 495,168 and 215,509.44

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Solution

The fourth proportional to 358,834.56, 495,168 and 215,509.44 is: 297,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,834.56 : 495,168 = 215,509.44 : x
  2. Step 2: Convert to fraction form
    358,834.56/495,168 = 215,509.44/x
  3. Step 3: Cross multiply
    358,834.56x = 495,168 × 215,509.44
  4. Step 4: Simplify right side
    358,834.56x = 106,713,378,385.92
  5. Step 5: Solve for x
    x = 106,713,378,385.92/358,834.56
  6. Step 6: Final answer
    x = 297,388.80

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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.