Home / 260,310.77-390,396.09-91,809.22

Finding the Fourth Proportional to 260,310.77, 390,396.09 and 91,809.22

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Solution

The fourth proportional to 260,310.77, 390,396.09 and 91,809.22 is: 137,689.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,310.77 : 390,396.09 = 91,809.22 : x
  2. Step 2: Convert to fraction form
    260,310.77/390,396.09 = 91,809.22/x
  3. Step 3: Cross multiply
    260,310.77x = 390,396.09 × 91,809.22
  4. Step 4: Simplify right side
    260,310.77x = 35,841,960,054.90
  5. Step 5: Solve for x
    x = 35,841,960,054.90/260,310.77
  6. Step 6: Final answer
    x = 137,689.12

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1.5x scale

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.