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Finding the Fourth Proportional to 538,561.26, 807,839.43 and 139,168.08

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Solution

The fourth proportional to 538,561.26, 807,839.43 and 139,168.08 is: 208,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,561.26 : 807,839.43 = 139,168.08 : x
  2. Step 2: Convert to fraction form
    538,561.26/807,839.43 = 139,168.08/x
  3. Step 3: Cross multiply
    538,561.26x = 807,839.43 × 139,168.08
  4. Step 4: Simplify right side
    538,561.26x = 112,425,461,899.51
  5. Step 5: Solve for x
    x = 112,425,461,899.51/538,561.26
  6. Step 6: Final answer
    x = 208,751.48

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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.