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Finding the Fourth Proportional to 260,613.75, 390,920.64 and 73,630.11

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Solution

The fourth proportional to 260,613.75, 390,920.64 and 73,630.11 is: 110,445.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,613.75 : 390,920.64 = 73,630.11 : x
  2. Step 2: Convert to fraction form
    260,613.75/390,920.64 = 73,630.11/x
  3. Step 3: Cross multiply
    260,613.75x = 390,920.64 × 73,630.11
  4. Step 4: Simplify right side
    260,613.75x = 28,783,529,724.47
  5. Step 5: Solve for x
    x = 28,783,529,724.47/260,613.75
  6. Step 6: Final answer
    x = 110,445.17

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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.