Home / 280,176.81-386,642.18-159,318.09

Finding the Fourth Proportional to 280,176.81, 386,642.18 and 159,318.09

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Solution

The fourth proportional to 280,176.81, 386,642.18 and 159,318.09 is: 219,857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,176.81 : 386,642.18 = 159,318.09 : x
  2. Step 2: Convert to fraction form
    280,176.81/386,642.18 = 159,318.09/x
  3. Step 3: Cross multiply
    280,176.81x = 386,642.18 × 159,318.09
  4. Step 4: Simplify right side
    280,176.81x = 61,599,092,834.45
  5. Step 5: Solve for x
    x = 61,599,092,834.45/280,176.81
  6. Step 6: Final answer
    x = 219,857.93

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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.