Home / 231,630.10-347,445.15-163,978.90

Finding the Fourth Proportional to 231,630.10, 347,445.15 and 163,978.90

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Solution

The fourth proportional to 231,630.10, 347,445.15 and 163,978.90 is: 245,968.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,630.10 : 347,445.15 = 163,978.90 : x
  2. Step 2: Convert to fraction form
    231,630.10/347,445.15 = 163,978.90/x
  3. Step 3: Cross multiply
    231,630.10x = 347,445.15 × 163,978.90
  4. Step 4: Simplify right side
    231,630.10x = 56,973,673,507.34
  5. Step 5: Solve for x
    x = 56,973,673,507.34/231,630.10
  6. Step 6: Final answer
    x = 245,968.35

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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.