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Finding the Fourth Proportional to 538,857.06, 808,219.98 and 139,464.70

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Solution

The fourth proportional to 538,857.06, 808,219.98 and 139,464.70 is: 209,180.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,857.06 : 808,219.98 = 139,464.70 : x
  2. Step 2: Convert to fraction form
    538,857.06/808,219.98 = 139,464.70/x
  3. Step 3: Cross multiply
    538,857.06x = 808,219.98 × 139,464.70
  4. Step 4: Simplify right side
    538,857.06x = 112,718,157,044.71
  5. Step 5: Solve for x
    x = 112,718,157,044.71/538,857.06
  6. Step 6: Final answer
    x = 209,180.07

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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.