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Finding the Fourth Proportional to 538,741.17, 808,045.74 and 139,348.80

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Solution

The fourth proportional to 538,741.17, 808,045.74 and 139,348.80 is: 209,006.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,741.17 : 808,045.74 = 139,348.80 : x
  2. Step 2: Convert to fraction form
    538,741.17/808,045.74 = 139,348.80/x
  3. Step 3: Cross multiply
    538,741.17x = 808,045.74 × 139,348.80
  4. Step 4: Simplify right side
    538,741.17x = 112,600,204,214.11
  5. Step 5: Solve for x
    x = 112,600,204,214.11/538,741.17
  6. Step 6: Final answer
    x = 209,006.12

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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.