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Finding the Fourth Proportional to 418,447.36, 577,541.36 and 248,648.64

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Solution

The fourth proportional to 418,447.36, 577,541.36 and 248,648.64 is: 343,185.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,447.36 : 577,541.36 = 248,648.64 : x
  2. Step 2: Convert to fraction form
    418,447.36/577,541.36 = 248,648.64/x
  3. Step 3: Cross multiply
    418,447.36x = 577,541.36 × 248,648.64
  4. Step 4: Simplify right side
    418,447.36x = 143,604,873,707.75
  5. Step 5: Solve for x
    x = 143,604,873,707.75/418,447.36
  6. Step 6: Final answer
    x = 343,185.04

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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.