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Finding the Fourth Proportional to 280,587.60, 387,114.84 and 159,698.61

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Solution

The fourth proportional to 280,587.60, 387,114.84 and 159,698.61 is: 220,329.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,587.60 : 387,114.84 = 159,698.61 : x
  2. Step 2: Convert to fraction form
    280,587.60/387,114.84 = 159,698.61/x
  3. Step 3: Cross multiply
    280,587.60x = 387,114.84 × 159,698.61
  4. Step 4: Simplify right side
    280,587.60x = 61,821,701,858.37
  5. Step 5: Solve for x
    x = 61,821,701,858.37/280,587.60
  6. Step 6: Final answer
    x = 220,329.42

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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.