Home / 260,176.89-390,291.32-70,640.31

Finding the Fourth Proportional to 260,176.89, 390,291.32 and 70,640.31

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Solution

The fourth proportional to 260,176.89, 390,291.32 and 70,640.31 is: 105,967.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,176.89 : 390,291.32 = 70,640.31 : x
  2. Step 2: Convert to fraction form
    260,176.89/390,291.32 = 70,640.31/x
  3. Step 3: Cross multiply
    260,176.89x = 390,291.32 × 70,640.31
  4. Step 4: Simplify right side
    260,176.89x = 27,570,299,481.91
  5. Step 5: Solve for x
    x = 27,570,299,481.91/260,176.89
  6. Step 6: Final answer
    x = 105,967.52

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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.