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Finding the Fourth Proportional to 476,279.28, 714,418.89 and 143,855.28

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Solution

The fourth proportional to 476,279.28, 714,418.89 and 143,855.28 is: 215,782.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,279.28 : 714,418.89 = 143,855.28 : x
  2. Step 2: Convert to fraction form
    476,279.28/714,418.89 = 143,855.28/x
  3. Step 3: Cross multiply
    476,279.28x = 714,418.89 × 143,855.28
  4. Step 4: Simplify right side
    476,279.28x = 102,772,929,458.24
  5. Step 5: Solve for x
    x = 102,772,929,458.24/476,279.28
  6. Step 6: Final answer
    x = 215,782.91

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.