Home / 260,001.57-390,060.69-86,906.31

Finding the Fourth Proportional to 260,001.57, 390,060.69 and 86,906.31

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Solution

The fourth proportional to 260,001.57, 390,060.69 and 86,906.31 is: 130,378.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,001.57 : 390,060.69 = 86,906.31 : x
  2. Step 2: Convert to fraction form
    260,001.57/390,060.69 = 86,906.31/x
  3. Step 3: Cross multiply
    260,001.57x = 390,060.69 × 86,906.31
  4. Step 4: Simplify right side
    260,001.57x = 33,898,735,243.95
  5. Step 5: Solve for x
    x = 33,898,735,243.95/260,001.57
  6. Step 6: Final answer
    x = 130,378.96

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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.