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Finding the Fourth Proportional to 276,686.19, 415,029.36 and 213,598.39

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Solution

The fourth proportional to 276,686.19, 415,029.36 and 213,598.39 is: 320,397.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,686.19 : 415,029.36 = 213,598.39 : x
  2. Step 2: Convert to fraction form
    276,686.19/415,029.36 = 213,598.39/x
  3. Step 3: Cross multiply
    276,686.19x = 415,029.36 × 213,598.39
  4. Step 4: Simplify right side
    276,686.19x = 88,649,603,098.73
  5. Step 5: Solve for x
    x = 88,649,603,098.73/276,686.19
  6. Step 6: Final answer
    x = 320,397.64

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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.