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Finding the Fourth Proportional to 294,422.40, 441,633.60 and 72,806.40

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Solution

The fourth proportional to 294,422.40, 441,633.60 and 72,806.40 is: 109,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,422.40 : 441,633.60 = 72,806.40 : x
  2. Step 2: Convert to fraction form
    294,422.40/441,633.60 = 72,806.40/x
  3. Step 3: Cross multiply
    294,422.40x = 441,633.60 × 72,806.40
  4. Step 4: Simplify right side
    294,422.40x = 32,153,752,535.04
  5. Step 5: Solve for x
    x = 32,153,752,535.04/294,422.40
  6. Step 6: Final answer
    x = 109,209.60

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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.