Home / 398,196.15-597,276.82-128,318.25

Finding the Fourth Proportional to 398,196.15, 597,276.82 and 128,318.25

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Solution

The fourth proportional to 398,196.15, 597,276.82 and 128,318.25 is: 192,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,196.15 : 597,276.82 = 128,318.25 : x
  2. Step 2: Convert to fraction form
    398,196.15/597,276.82 = 128,318.25/x
  3. Step 3: Cross multiply
    398,196.15x = 597,276.82 × 128,318.25
  4. Step 4: Simplify right side
    398,196.15x = 76,641,516,307.97
  5. Step 5: Solve for x
    x = 76,641,516,307.97/398,196.15
  6. Step 6: Final answer
    x = 192,471.77

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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.