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Finding the Fourth Proportional to 290,934.40, 436,617.92 and 216,228.48

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Solution

The fourth proportional to 290,934.40, 436,617.92 and 216,228.48 is: 324,503.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,934.40 : 436,617.92 = 216,228.48 : x
  2. Step 2: Convert to fraction form
    290,934.40/436,617.92 = 216,228.48/x
  3. Step 3: Cross multiply
    290,934.40x = 436,617.92 × 216,228.48
  4. Step 4: Simplify right side
    290,934.40x = 94,409,229,182.36
  5. Step 5: Solve for x
    x = 94,409,229,182.36/290,934.40
  6. Step 6: Final answer
    x = 324,503.49

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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.