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Finding the Fourth Proportional to 378,023.70, 567,039.72 and 161,853.30

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Solution

The fourth proportional to 378,023.70, 567,039.72 and 161,853.30 is: 242,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,023.70 : 567,039.72 = 161,853.30 : x
  2. Step 2: Convert to fraction form
    378,023.70/567,039.72 = 161,853.30/x
  3. Step 3: Cross multiply
    378,023.70x = 567,039.72 × 161,853.30
  4. Step 4: Simplify right side
    378,023.70x = 91,777,249,913.08
  5. Step 5: Solve for x
    x = 91,777,249,913.08/378,023.70
  6. Step 6: Final answer
    x = 242,781.74

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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.