Home / 231,569.40-347,354.10-81,978.60

Finding the Fourth Proportional to 231,569.40, 347,354.10 and 81,978.60

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Solution

The fourth proportional to 231,569.40, 347,354.10 and 81,978.60 is: 122,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,569.40 : 347,354.10 = 81,978.60 : x
  2. Step 2: Convert to fraction form
    231,569.40/347,354.10 = 81,978.60/x
  3. Step 3: Cross multiply
    231,569.40x = 347,354.10 × 81,978.60
  4. Step 4: Simplify right side
    231,569.40x = 28,475,602,822.26
  5. Step 5: Solve for x
    x = 28,475,602,822.26/231,569.40
  6. Step 6: Final answer
    x = 122,967.90

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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.