Home / 260,315.40-390,694.77-185,618.55

Finding the Fourth Proportional to 260,315.40, 390,694.77 and 185,618.55

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Solution

The fourth proportional to 260,315.40, 390,694.77 and 185,618.55 is: 278,585.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,315.40 : 390,694.77 = 185,618.55 : x
  2. Step 2: Convert to fraction form
    260,315.40/390,694.77 = 185,618.55/x
  3. Step 3: Cross multiply
    260,315.40x = 390,694.77 × 185,618.55
  4. Step 4: Simplify right side
    260,315.40x = 72,520,196,699.98
  5. Step 5: Solve for x
    x = 72,520,196,699.98/260,315.40
  6. Step 6: Final answer
    x = 278,585.89

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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.