Home / 326,925.36-490,387.20-87,039.28

Finding the Fourth Proportional to 326,925.36, 490,387.20 and 87,039.28

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Solution

The fourth proportional to 326,925.36, 490,387.20 and 87,039.28 is: 130,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,925.36 : 490,387.20 = 87,039.28 : x
  2. Step 2: Convert to fraction form
    326,925.36/490,387.20 = 87,039.28/x
  3. Step 3: Cross multiply
    326,925.36x = 490,387.20 × 87,039.28
  4. Step 4: Simplify right side
    326,925.36x = 42,682,948,809.22
  5. Step 5: Solve for x
    x = 42,682,948,809.22/326,925.36
  6. Step 6: Final answer
    x = 130,558.70

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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.