Home / 326,926.36-490,388.70-87,040.28

Finding the Fourth Proportional to 326,926.36, 490,388.70 and 87,040.28

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Solution

The fourth proportional to 326,926.36, 490,388.70 and 87,040.28 is: 130,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,926.36 : 490,388.70 = 87,040.28 : x
  2. Step 2: Convert to fraction form
    326,926.36/490,388.70 = 87,040.28/x
  3. Step 3: Cross multiply
    326,926.36x = 490,388.70 × 87,040.28
  4. Step 4: Simplify right side
    326,926.36x = 42,683,569,756.84
  5. Step 5: Solve for x
    x = 42,683,569,756.84/326,926.36
  6. Step 6: Final answer
    x = 130,560.20

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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.