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Finding the Fourth Proportional to 260,060.58, 390,105.45 and 73,057.50

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Solution

The fourth proportional to 260,060.58, 390,105.45 and 73,057.50 is: 109,590.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,060.58 : 390,105.45 = 73,057.50 : x
  2. Step 2: Convert to fraction form
    260,060.58/390,105.45 = 73,057.50/x
  3. Step 3: Cross multiply
    260,060.58x = 390,105.45 × 73,057.50
  4. Step 4: Simplify right side
    260,060.58x = 28,500,128,913.38
  5. Step 5: Solve for x
    x = 28,500,128,913.38/260,060.58
  6. Step 6: Final answer
    x = 109,590.35

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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.