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Finding the Fourth Proportional to 208,530.55, 287,772.65 and 113,036.82

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Solution

The fourth proportional to 208,530.55, 287,772.65 and 113,036.82 is: 155,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,530.55 : 287,772.65 = 113,036.82 : x
  2. Step 2: Convert to fraction form
    208,530.55/287,772.65 = 113,036.82/x
  3. Step 3: Cross multiply
    208,530.55x = 287,772.65 × 113,036.82
  4. Step 4: Simplify right side
    208,530.55x = 32,528,905,238.97
  5. Step 5: Solve for x
    x = 32,528,905,238.97/208,530.55
  6. Step 6: Final answer
    x = 155,991.08

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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.