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Finding the Fourth Proportional to 347,837.88, 521,731.30 and 111,117

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Solution

The fourth proportional to 347,837.88, 521,731.30 and 111,117 is: 166,667.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,837.88 : 521,731.30 = 111,117 : x
  2. Step 2: Convert to fraction form
    347,837.88/521,731.30 = 111,117/x
  3. Step 3: Cross multiply
    347,837.88x = 521,731.30 × 111,117
  4. Step 4: Simplify right side
    347,837.88x = 57,973,216,862.10
  5. Step 5: Solve for x
    x = 57,973,216,862.10/347,837.88
  6. Step 6: Final answer
    x = 166,667.35

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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.