Home / 282,379.13-389,685.93-155,057.46

Finding the Fourth Proportional to 282,379.13, 389,685.93 and 155,057.46

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Solution

The fourth proportional to 282,379.13, 389,685.93 and 155,057.46 is: 213,980.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,379.13 : 389,685.93 = 155,057.46 : x
  2. Step 2: Convert to fraction form
    282,379.13/389,685.93 = 155,057.46/x
  3. Step 3: Cross multiply
    282,379.13x = 389,685.93 × 155,057.46
  4. Step 4: Simplify right side
    282,379.13x = 60,423,708,555.11
  5. Step 5: Solve for x
    x = 60,423,708,555.11/282,379.13
  6. Step 6: Final answer
    x = 213,980.79

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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.