Home / 260,068.40-390,215.29-91,709.02

Finding the Fourth Proportional to 260,068.40, 390,215.29 and 91,709.02

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Solution

The fourth proportional to 260,068.40, 390,215.29 and 91,709.02 is: 137,603.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,068.40 : 390,215.29 = 91,709.02 : x
  2. Step 2: Convert to fraction form
    260,068.40/390,215.29 = 91,709.02/x
  3. Step 3: Cross multiply
    260,068.40x = 390,215.29 × 91,709.02
  4. Step 4: Simplify right side
    260,068.40x = 35,786,260,630.11
  5. Step 5: Solve for x
    x = 35,786,260,630.11/260,068.40
  6. Step 6: Final answer
    x = 137,603.27

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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.