Home / 312,046.60-430,623-168,806.28

Finding the Fourth Proportional to 312,046.60, 430,623 and 168,806.28

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Solution

The fourth proportional to 312,046.60, 430,623 and 168,806.28 is: 232,951.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,046.60 : 430,623 = 168,806.28 : x
  2. Step 2: Convert to fraction form
    312,046.60/430,623 = 168,806.28/x
  3. Step 3: Cross multiply
    312,046.60x = 430,623 × 168,806.28
  4. Step 4: Simplify right side
    312,046.60x = 72,691,866,712.44
  5. Step 5: Solve for x
    x = 72,691,866,712.44/312,046.60
  6. Step 6: Final answer
    x = 232,951.96

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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.