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Finding the Fourth Proportional to 208,248.88, 312,308.64 and 75,111.82

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Solution

The fourth proportional to 208,248.88, 312,308.64 and 75,111.82 is: 112,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,248.88 : 312,308.64 = 75,111.82 : x
  2. Step 2: Convert to fraction form
    208,248.88/312,308.64 = 75,111.82/x
  3. Step 3: Cross multiply
    208,248.88x = 312,308.64 × 75,111.82
  4. Step 4: Simplify right side
    208,248.88x = 23,458,070,352.12
  5. Step 5: Solve for x
    x = 23,458,070,352.12/208,248.88
  6. Step 6: Final answer
    x = 112,644.40

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1.5x scale

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.