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Finding the Fourth Proportional to 260,133.48, 390,200.36 and 73,144.98

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Solution

The fourth proportional to 260,133.48, 390,200.36 and 73,144.98 is: 109,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,133.48 : 390,200.36 = 73,144.98 : x
  2. Step 2: Convert to fraction form
    260,133.48/390,200.36 = 73,144.98/x
  3. Step 3: Cross multiply
    260,133.48x = 390,200.36 × 73,144.98
  4. Step 4: Simplify right side
    260,133.48x = 28,541,197,162.47
  5. Step 5: Solve for x
    x = 28,541,197,162.47/260,133.48
  6. Step 6: Final answer
    x = 109,717.51

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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.