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Finding the Fourth Proportional to 617,164.90, 851,344.50 and 359,012.80

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Solution

The fourth proportional to 617,164.90, 851,344.50 and 359,012.80 is: 495,238.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,164.90 : 851,344.50 = 359,012.80 : x
  2. Step 2: Convert to fraction form
    617,164.90/851,344.50 = 359,012.80/x
  3. Step 3: Cross multiply
    617,164.90x = 851,344.50 × 359,012.80
  4. Step 4: Simplify right side
    617,164.90x = 305,643,572,709.60
  5. Step 5: Solve for x
    x = 305,643,572,709.60/617,164.90
  6. Step 6: Final answer
    x = 495,238.10

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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.