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Finding the Fourth Proportional to 347,649.63, 479,763.72 and 211,689.24

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Solution

The fourth proportional to 347,649.63, 479,763.72 and 211,689.24 is: 292,135.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,649.63 : 479,763.72 = 211,689.24 : x
  2. Step 2: Convert to fraction form
    347,649.63/479,763.72 = 211,689.24/x
  3. Step 3: Cross multiply
    347,649.63x = 479,763.72 × 211,689.24
  4. Step 4: Simplify right side
    347,649.63x = 101,560,817,266.37
  5. Step 5: Solve for x
    x = 101,560,817,266.37/347,649.63
  6. Step 6: Final answer
    x = 292,135.55

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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.