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Finding the Fourth Proportional to 453,699.39, 680,549.10 and 138,159.03

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Solution

The fourth proportional to 453,699.39, 680,549.10 and 138,159.03 is: 207,238.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,699.39 : 680,549.10 = 138,159.03 : x
  2. Step 2: Convert to fraction form
    453,699.39/680,549.10 = 138,159.03/x
  3. Step 3: Cross multiply
    453,699.39x = 680,549.10 × 138,159.03
  4. Step 4: Simplify right side
    453,699.39x = 94,024,003,523.37
  5. Step 5: Solve for x
    x = 94,024,003,523.37/453,699.39
  6. Step 6: Final answer
    x = 207,238.55

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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.