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Finding the Fourth Proportional to 418,707.56, 577,613.04 and 248,821.40

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Solution

The fourth proportional to 418,707.56, 577,613.04 and 248,821.40 is: 343,252.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,707.56 : 577,613.04 = 248,821.40 : x
  2. Step 2: Convert to fraction form
    418,707.56/577,613.04 = 248,821.40/x
  3. Step 3: Cross multiply
    418,707.56x = 577,613.04 × 248,821.40
  4. Step 4: Simplify right side
    418,707.56x = 143,722,485,271.06
  5. Step 5: Solve for x
    x = 143,722,485,271.06/418,707.56
  6. Step 6: Final answer
    x = 343,252.66

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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.