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Finding the Fourth Proportional to 286,488, 426,705.80 and 271,499.76

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Solution

The fourth proportional to 286,488, 426,705.80 and 271,499.76 is: 404,381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,488 : 426,705.80 = 271,499.76 : x
  2. Step 2: Convert to fraction form
    286,488/426,705.80 = 271,499.76/x
  3. Step 3: Cross multiply
    286,488x = 426,705.80 × 271,499.76
  4. Step 4: Simplify right side
    286,488x = 115,850,520,933.11
  5. Step 5: Solve for x
    x = 115,850,520,933.11/286,488
  6. Step 6: Final answer
    x = 404,381.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.