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Finding the Fourth Proportional to 260,467.94, 390,710.12 and 89,687.88

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Solution

The fourth proportional to 260,467.94, 390,710.12 and 89,687.88 is: 134,534.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,467.94 : 390,710.12 = 89,687.88 : x
  2. Step 2: Convert to fraction form
    260,467.94/390,710.12 = 89,687.88/x
  3. Step 3: Cross multiply
    260,467.94x = 390,710.12 × 89,687.88
  4. Step 4: Simplify right side
    260,467.94x = 35,041,961,908.91
  5. Step 5: Solve for x
    x = 35,041,961,908.91/260,467.94
  6. Step 6: Final answer
    x = 134,534.64

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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.