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Finding the Fourth Proportional to 208,515.70, 287,782.40 and 132,041.78

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Solution

The fourth proportional to 208,515.70, 287,782.40 and 132,041.78 is: 182,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,515.70 : 287,782.40 = 132,041.78 : x
  2. Step 2: Convert to fraction form
    208,515.70/287,782.40 = 132,041.78/x
  3. Step 3: Cross multiply
    208,515.70x = 287,782.40 × 132,041.78
  4. Step 4: Simplify right side
    208,515.70x = 37,999,300,348.67
  5. Step 5: Solve for x
    x = 37,999,300,348.67/208,515.70
  6. Step 6: Final answer
    x = 182,237.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.