Home / 260,078.56-390,215.02-102,416.92

Finding the Fourth Proportional to 260,078.56, 390,215.02 and 102,416.92

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Solution

The fourth proportional to 260,078.56, 390,215.02 and 102,416.92 is: 153,663.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,078.56 : 390,215.02 = 102,416.92 : x
  2. Step 2: Convert to fraction form
    260,078.56/390,215.02 = 102,416.92/x
  3. Step 3: Cross multiply
    260,078.56x = 390,215.02 × 102,416.92
  4. Step 4: Simplify right side
    260,078.56x = 39,964,620,486.14
  5. Step 5: Solve for x
    x = 39,964,620,486.14/260,078.56
  6. Step 6: Final answer
    x = 153,663.65

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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.