Home / 292,317.40-438,443.70-81,976.60

Finding the Fourth Proportional to 292,317.40, 438,443.70 and 81,976.60

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Solution

The fourth proportional to 292,317.40, 438,443.70 and 81,976.60 is: 122,955.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,317.40 : 438,443.70 = 81,976.60 : x
  2. Step 2: Convert to fraction form
    292,317.40/438,443.70 = 81,976.60/x
  3. Step 3: Cross multiply
    292,317.40x = 438,443.70 × 81,976.60
  4. Step 4: Simplify right side
    292,317.40x = 35,942,123,817.42
  5. Step 5: Solve for x
    x = 35,942,123,817.42/292,317.40
  6. Step 6: Final answer
    x = 122,955.81

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1.5x scale

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.