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Finding the Fourth Proportional to 208,885.17, 288,261.90 and 113,391.93

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Solution

The fourth proportional to 208,885.17, 288,261.90 and 113,391.93 is: 156,481.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,885.17 : 288,261.90 = 113,391.93 : x
  2. Step 2: Convert to fraction form
    208,885.17/288,261.90 = 113,391.93/x
  3. Step 3: Cross multiply
    208,885.17x = 288,261.90 × 113,391.93
  4. Step 4: Simplify right side
    208,885.17x = 32,686,573,186.47
  5. Step 5: Solve for x
    x = 32,686,573,186.47/208,885.17
  6. Step 6: Final answer
    x = 156,481.06

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1.5x scale

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.