Home / 347,427.60-521,314.20-137,072.40

Finding the Fourth Proportional to 347,427.60, 521,314.20 and 137,072.40

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Solution

The fourth proportional to 347,427.60, 521,314.20 and 137,072.40 is: 205,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,427.60 : 521,314.20 = 137,072.40 : x
  2. Step 2: Convert to fraction form
    347,427.60/521,314.20 = 137,072.40/x
  3. Step 3: Cross multiply
    347,427.60x = 521,314.20 × 137,072.40
  4. Step 4: Simplify right side
    347,427.60x = 71,457,788,548.08
  5. Step 5: Solve for x
    x = 71,457,788,548.08/347,427.60
  6. Step 6: Final answer
    x = 205,676.78

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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.