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Finding the Fourth Proportional to 251,900.34, 347,638.30 and 138,723.10

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Solution

The fourth proportional to 251,900.34, 347,638.30 and 138,723.10 is: 191,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,900.34 : 347,638.30 = 138,723.10 : x
  2. Step 2: Convert to fraction form
    251,900.34/347,638.30 = 138,723.10/x
  3. Step 3: Cross multiply
    251,900.34x = 347,638.30 × 138,723.10
  4. Step 4: Simplify right side
    251,900.34x = 48,225,462,654.73
  5. Step 5: Solve for x
    x = 48,225,462,654.73/251,900.34
  6. Step 6: Final answer
    x = 191,446.60

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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.