Home / 280,148.12-386,622.67-159,300.65

Finding the Fourth Proportional to 280,148.12, 386,622.67 and 159,300.65

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Solution

The fourth proportional to 280,148.12, 386,622.67 and 159,300.65 is: 219,845.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,148.12 : 386,622.67 = 159,300.65 : x
  2. Step 2: Convert to fraction form
    280,148.12/386,622.67 = 159,300.65/x
  3. Step 3: Cross multiply
    280,148.12x = 386,622.67 × 159,300.65
  4. Step 4: Simplify right side
    280,148.12x = 61,589,240,304.37
  5. Step 5: Solve for x
    x = 61,589,240,304.37/280,148.12
  6. Step 6: Final answer
    x = 219,845.28

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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.