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Finding the Fourth Proportional to 290,342.40, 435,729.60 and 150,028.80

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Solution

The fourth proportional to 290,342.40, 435,729.60 and 150,028.80 is: 225,154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,342.40 : 435,729.60 = 150,028.80 : x
  2. Step 2: Convert to fraction form
    290,342.40/435,729.60 = 150,028.80/x
  3. Step 3: Cross multiply
    290,342.40x = 435,729.60 × 150,028.80
  4. Step 4: Simplify right side
    290,342.40x = 65,371,989,012.48
  5. Step 5: Solve for x
    x = 65,371,989,012.48/290,342.40
  6. Step 6: Final answer
    x = 225,154.81

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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.