Home / 283,710.80-391,518.87-156,386.18

Finding the Fourth Proportional to 283,710.80, 391,518.87 and 156,386.18

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Solution

The fourth proportional to 283,710.80, 391,518.87 and 156,386.18 is: 215,811.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,710.80 : 391,518.87 = 156,386.18 : x
  2. Step 2: Convert to fraction form
    283,710.80/391,518.87 = 156,386.18/x
  3. Step 3: Cross multiply
    283,710.80x = 391,518.87 × 156,386.18
  4. Step 4: Simplify right side
    283,710.80x = 61,228,140,477.22
  5. Step 5: Solve for x
    x = 61,228,140,477.22/283,710.80
  6. Step 6: Final answer
    x = 215,811.81

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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.