Home / 280,765.58-387,456.71-153,441.18

Finding the Fourth Proportional to 280,765.58, 387,456.71 and 153,441.18

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Solution

The fourth proportional to 280,765.58, 387,456.71 and 153,441.18 is: 211,748.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,765.58 : 387,456.71 = 153,441.18 : x
  2. Step 2: Convert to fraction form
    280,765.58/387,456.71 = 153,441.18/x
  3. Step 3: Cross multiply
    280,765.58x = 387,456.71 × 153,441.18
  4. Step 4: Simplify right side
    280,765.58x = 59,451,814,014.11
  5. Step 5: Solve for x
    x = 59,451,814,014.11/280,765.58
  6. Step 6: Final answer
    x = 211,748.94

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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.