Home / 280,730.48-387,391-159,876.84

Finding the Fourth Proportional to 280,730.48, 387,391 and 159,876.84

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Solution

The fourth proportional to 280,730.48, 387,391 and 159,876.84 is: 220,620.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,730.48 : 387,391 = 159,876.84 : x
  2. Step 2: Convert to fraction form
    280,730.48/387,391 = 159,876.84/x
  3. Step 3: Cross multiply
    280,730.48x = 387,391 × 159,876.84
  4. Step 4: Simplify right side
    280,730.48x = 61,934,848,924.44
  5. Step 5: Solve for x
    x = 61,934,848,924.44/280,730.48
  6. Step 6: Final answer
    x = 220,620.32

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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.