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Finding the Fourth Proportional to 559,675.80, 839,513.66 and 138,951.68

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Solution

The fourth proportional to 559,675.80, 839,513.66 and 138,951.68 is: 208,427.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,675.80 : 839,513.66 = 138,951.68 : x
  2. Step 2: Convert to fraction form
    559,675.80/839,513.66 = 138,951.68/x
  3. Step 3: Cross multiply
    559,675.80x = 839,513.66 × 138,951.68
  4. Step 4: Simplify right side
    559,675.80x = 116,651,833,439.95
  5. Step 5: Solve for x
    x = 116,651,833,439.95/559,675.80
  6. Step 6: Final answer
    x = 208,427.51

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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.