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Finding the Fourth Proportional to 378,529.39, 522,238.65 and 242,638.27

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Solution

The fourth proportional to 378,529.39, 522,238.65 and 242,638.27 is: 334,756.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,529.39 : 522,238.65 = 242,638.27 : x
  2. Step 2: Convert to fraction form
    378,529.39/522,238.65 = 242,638.27/x
  3. Step 3: Cross multiply
    378,529.39x = 522,238.65 × 242,638.27
  4. Step 4: Simplify right side
    378,529.39x = 126,715,082,563.14
  5. Step 5: Solve for x
    x = 126,715,082,563.14/378,529.39
  6. Step 6: Final answer
    x = 334,756.26

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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.