Home / 260,574.28-390,857.31-83,080.09

Finding the Fourth Proportional to 260,574.28, 390,857.31 and 83,080.09

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Solution

The fourth proportional to 260,574.28, 390,857.31 and 83,080.09 is: 124,618.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,574.28 : 390,857.31 = 83,080.09 : x
  2. Step 2: Convert to fraction form
    260,574.28/390,857.31 = 83,080.09/x
  3. Step 3: Cross multiply
    260,574.28x = 390,857.31 × 83,080.09
  4. Step 4: Simplify right side
    260,574.28x = 32,472,460,980.53
  5. Step 5: Solve for x
    x = 32,472,460,980.53/260,574.28
  6. Step 6: Final answer
    x = 124,618.83

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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.