Home / 231,640.40-347,460.60-142,605.20

Finding the Fourth Proportional to 231,640.40, 347,460.60 and 142,605.20

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Solution

The fourth proportional to 231,640.40, 347,460.60 and 142,605.20 is: 213,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,640.40 : 347,460.60 = 142,605.20 : x
  2. Step 2: Convert to fraction form
    231,640.40/347,460.60 = 142,605.20/x
  3. Step 3: Cross multiply
    231,640.40x = 347,460.60 × 142,605.20
  4. Step 4: Simplify right side
    231,640.40x = 49,549,688,355.12
  5. Step 5: Solve for x
    x = 49,549,688,355.12/231,640.40
  6. Step 6: Final answer
    x = 213,907.80

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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.