Home / 282,142.41-389,355.45-154,820.13

Finding the Fourth Proportional to 282,142.41, 389,355.45 and 154,820.13

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Solution

The fourth proportional to 282,142.41, 389,355.45 and 154,820.13 is: 213,651.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,142.41 : 389,355.45 = 154,820.13 : x
  2. Step 2: Convert to fraction form
    282,142.41/389,355.45 = 154,820.13/x
  3. Step 3: Cross multiply
    282,142.41x = 389,355.45 × 154,820.13
  4. Step 4: Simplify right side
    282,142.41x = 60,280,061,385.21
  5. Step 5: Solve for x
    x = 60,280,061,385.21/282,142.41
  6. Step 6: Final answer
    x = 213,651.19

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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.