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Finding the Fourth Proportional to 418,473.72, 577,290.78 and 248,587.56

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Solution

The fourth proportional to 418,473.72, 577,290.78 and 248,587.56 is: 342,930.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,473.72 : 577,290.78 = 248,587.56 : x
  2. Step 2: Convert to fraction form
    418,473.72/577,290.78 = 248,587.56/x
  3. Step 3: Cross multiply
    418,473.72x = 577,290.78 × 248,587.56
  4. Step 4: Simplify right side
    418,473.72x = 143,507,306,410.70
  5. Step 5: Solve for x
    x = 143,507,306,410.70/418,473.72
  6. Step 6: Final answer
    x = 342,930.27

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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.