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Finding the Fourth Proportional to 260,587, 390,882.12 and 73,600.12

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Solution

The fourth proportional to 260,587, 390,882.12 and 73,600.12 is: 110,400.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,587 : 390,882.12 = 73,600.12 : x
  2. Step 2: Convert to fraction form
    260,587/390,882.12 = 73,600.12/x
  3. Step 3: Cross multiply
    260,587x = 390,882.12 × 73,600.12
  4. Step 4: Simplify right side
    260,587x = 28,768,970,937.85
  5. Step 5: Solve for x
    x = 28,768,970,937.85/260,587
  6. Step 6: Final answer
    x = 110,400.64

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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.