Home / 283,615.50-391,390.68-156,288.36

Finding the Fourth Proportional to 283,615.50, 391,390.68 and 156,288.36

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Solution

The fourth proportional to 283,615.50, 391,390.68 and 156,288.36 is: 215,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,615.50 : 391,390.68 = 156,288.36 : x
  2. Step 2: Convert to fraction form
    283,615.50/391,390.68 = 156,288.36/x
  3. Step 3: Cross multiply
    283,615.50x = 391,390.68 × 156,288.36
  4. Step 4: Simplify right side
    283,615.50x = 61,169,807,496.48
  5. Step 5: Solve for x
    x = 61,169,807,496.48/283,615.50
  6. Step 6: Final answer
    x = 215,678.65

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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.