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Finding the Fourth Proportional to 220,319.60, 330,480.84 and 70,582.64

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Solution

The fourth proportional to 220,319.60, 330,480.84 and 70,582.64 is: 105,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,319.60 : 330,480.84 = 70,582.64 : x
  2. Step 2: Convert to fraction form
    220,319.60/330,480.84 = 70,582.64/x
  3. Step 3: Cross multiply
    220,319.60x = 330,480.84 × 70,582.64
  4. Step 4: Simplify right side
    220,319.60x = 23,326,210,156.62
  5. Step 5: Solve for x
    x = 23,326,210,156.62/220,319.60
  6. Step 6: Final answer
    x = 105,874.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.