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Finding the Fourth Proportional to 317,132, 437,655.40 and 173,897.54

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Solution

The fourth proportional to 317,132, 437,655.40 and 173,897.54 is: 239,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,132 : 437,655.40 = 173,897.54 : x
  2. Step 2: Convert to fraction form
    317,132/437,655.40 = 173,897.54/x
  3. Step 3: Cross multiply
    317,132x = 437,655.40 × 173,897.54
  4. Step 4: Simplify right side
    317,132x = 76,107,197,427.72
  5. Step 5: Solve for x
    x = 76,107,197,427.72/317,132
  6. Step 6: Final answer
    x = 239,985.87

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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.