Home / 260,085.50-390,141.76-82,606.40

Finding the Fourth Proportional to 260,085.50, 390,141.76 and 82,606.40

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Solution

The fourth proportional to 260,085.50, 390,141.76 and 82,606.40 is: 123,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,085.50 : 390,141.76 = 82,606.40 : x
  2. Step 2: Convert to fraction form
    260,085.50/390,141.76 = 82,606.40/x
  3. Step 3: Cross multiply
    260,085.50x = 390,141.76 × 82,606.40
  4. Step 4: Simplify right side
    260,085.50x = 32,228,206,283.26
  5. Step 5: Solve for x
    x = 32,228,206,283.26/260,085.50
  6. Step 6: Final answer
    x = 123,913.89

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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.