Home / 420,339.30-629,816.40-242,536.20

Finding the Fourth Proportional to 420,339.30, 629,816.40 and 242,536.20

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Solution

The fourth proportional to 420,339.30, 629,816.40 and 242,536.20 is: 363,404.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,339.30 : 629,816.40 = 242,536.20 : x
  2. Step 2: Convert to fraction form
    420,339.30/629,816.40 = 242,536.20/x
  3. Step 3: Cross multiply
    420,339.30x = 629,816.40 × 242,536.20
  4. Step 4: Simplify right side
    420,339.30x = 152,753,276,353.68
  5. Step 5: Solve for x
    x = 152,753,276,353.68/420,339.30
  6. Step 6: Final answer
    x = 363,404.70

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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.