Home / 268,228.08-402,342.66-99,785.34

Finding the Fourth Proportional to 268,228.08, 402,342.66 and 99,785.34

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Solution

The fourth proportional to 268,228.08, 402,342.66 and 99,785.34 is: 149,678.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,228.08 : 402,342.66 = 99,785.34 : x
  2. Step 2: Convert to fraction form
    268,228.08/402,342.66 = 99,785.34/x
  3. Step 3: Cross multiply
    268,228.08x = 402,342.66 × 99,785.34
  4. Step 4: Simplify right side
    268,228.08x = 40,147,899,124.60
  5. Step 5: Solve for x
    x = 40,147,899,124.60/268,228.08
  6. Step 6: Final answer
    x = 149,678.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.