Home / 283,800.12-391,643.69-156,476.09

Finding the Fourth Proportional to 283,800.12, 391,643.69 and 156,476.09

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Solution

The fourth proportional to 283,800.12, 391,643.69 and 156,476.09 is: 215,936.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,800.12 : 391,643.69 = 156,476.09 : x
  2. Step 2: Convert to fraction form
    283,800.12/391,643.69 = 156,476.09/x
  3. Step 3: Cross multiply
    283,800.12x = 391,643.69 × 156,476.09
  4. Step 4: Simplify right side
    283,800.12x = 61,282,870,543.77
  5. Step 5: Solve for x
    x = 61,282,870,543.77/283,800.12
  6. Step 6: Final answer
    x = 215,936.73

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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.