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Finding the Fourth Proportional to 260,204.72, 390,333.06 and 70,668.08

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Solution

The fourth proportional to 260,204.72, 390,333.06 and 70,668.08 is: 106,009.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,204.72 : 390,333.06 = 70,668.08 : x
  2. Step 2: Convert to fraction form
    260,204.72/390,333.06 = 70,668.08/x
  3. Step 3: Cross multiply
    260,204.72x = 390,333.06 × 70,668.08
  4. Step 4: Simplify right side
    260,204.72x = 27,584,087,910.72
  5. Step 5: Solve for x
    x = 27,584,087,910.72/260,204.72
  6. Step 6: Final answer
    x = 106,009.18

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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.