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Finding the Fourth Proportional to 260,405.84, 390,666.90 and 110,650.88

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Solution

The fourth proportional to 260,405.84, 390,666.90 and 110,650.88 is: 166,001.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,405.84 : 390,666.90 = 110,650.88 : x
  2. Step 2: Convert to fraction form
    260,405.84/390,666.90 = 110,650.88/x
  3. Step 3: Cross multiply
    260,405.84x = 390,666.90 × 110,650.88
  4. Step 4: Simplify right side
    260,405.84x = 43,227,636,271.87
  5. Step 5: Solve for x
    x = 43,227,636,271.87/260,405.84
  6. Step 6: Final answer
    x = 166,001.02

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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.