Home / 280,788.22-387,487.70-153,463.82

Finding the Fourth Proportional to 280,788.22, 387,487.70 and 153,463.82

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Solution

The fourth proportional to 280,788.22, 387,487.70 and 153,463.82 is: 211,780.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,788.22 : 387,487.70 = 153,463.82 : x
  2. Step 2: Convert to fraction form
    280,788.22/387,487.70 = 153,463.82/x
  3. Step 3: Cross multiply
    280,788.22x = 387,487.70 × 153,463.82
  4. Step 4: Simplify right side
    280,788.22x = 59,465,340,515.75
  5. Step 5: Solve for x
    x = 59,465,340,515.75/280,788.22
  6. Step 6: Final answer
    x = 211,780.04

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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.