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Finding the Fourth Proportional to 418,358.72, 577,338.72 and 227,372.24

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Solution

The fourth proportional to 418,358.72, 577,338.72 and 227,372.24 is: 313,775.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,358.72 : 577,338.72 = 227,372.24 : x
  2. Step 2: Convert to fraction form
    418,358.72/577,338.72 = 227,372.24/x
  3. Step 3: Cross multiply
    418,358.72x = 577,338.72 × 227,372.24
  4. Step 4: Simplify right side
    418,358.72x = 131,270,798,005.13
  5. Step 5: Solve for x
    x = 131,270,798,005.13/418,358.72
  6. Step 6: Final answer
    x = 313,775.69

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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.