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Finding the Fourth Proportional to 538,674.45, 808,011.54 and 139,355.52

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Solution

The fourth proportional to 538,674.45, 808,011.54 and 139,355.52 is: 209,033.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,674.45 : 808,011.54 = 139,355.52 : x
  2. Step 2: Convert to fraction form
    538,674.45/808,011.54 = 139,355.52/x
  3. Step 3: Cross multiply
    538,674.45x = 808,011.54 × 139,355.52
  4. Step 4: Simplify right side
    538,674.45x = 112,600,868,322.70
  5. Step 5: Solve for x
    x = 112,600,868,322.70/538,674.45
  6. Step 6: Final answer
    x = 209,033.25

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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.