Home / 282,110.15-389,312.48-154,786.66

Finding the Fourth Proportional to 282,110.15, 389,312.48 and 154,786.66

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Solution

The fourth proportional to 282,110.15, 389,312.48 and 154,786.66 is: 213,605.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,110.15 : 389,312.48 = 154,786.66 : x
  2. Step 2: Convert to fraction form
    282,110.15/389,312.48 = 154,786.66/x
  3. Step 3: Cross multiply
    282,110.15x = 389,312.48 × 154,786.66
  4. Step 4: Simplify right side
    282,110.15x = 60,260,378,475.52
  5. Step 5: Solve for x
    x = 60,260,378,475.52/282,110.15
  6. Step 6: Final answer
    x = 213,605.85

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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.