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Finding the Fourth Proportional to 282,657.99, 389,678.30 and 225,491.33

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Solution

The fourth proportional to 282,657.99, 389,678.30 and 225,491.33 is: 310,867.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,657.99 : 389,678.30 = 225,491.33 : x
  2. Step 2: Convert to fraction form
    282,657.99/389,678.30 = 225,491.33/x
  3. Step 3: Cross multiply
    282,657.99x = 389,678.30 × 225,491.33
  4. Step 4: Simplify right side
    282,657.99x = 87,869,078,139.14
  5. Step 5: Solve for x
    x = 87,869,078,139.14/282,657.99
  6. Step 6: Final answer
    x = 310,867.13

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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.