Home / 354,504.15-489,221.57-193,359.21

Finding the Fourth Proportional to 354,504.15, 489,221.57 and 193,359.21

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Solution

The fourth proportional to 354,504.15, 489,221.57 and 193,359.21 is: 266,838.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,504.15 : 489,221.57 = 193,359.21 : x
  2. Step 2: Convert to fraction form
    354,504.15/489,221.57 = 193,359.21/x
  3. Step 3: Cross multiply
    354,504.15x = 489,221.57 × 193,359.21
  4. Step 4: Simplify right side
    354,504.15x = 94,595,495,323.36
  5. Step 5: Solve for x
    x = 94,595,495,323.36/354,504.15
  6. Step 6: Final answer
    x = 266,838.89

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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.