Home / 219,320.87-328,979.63-89,489.15

Finding the Fourth Proportional to 219,320.87, 328,979.63 and 89,489.15

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Solution

The fourth proportional to 219,320.87, 328,979.63 and 89,489.15 is: 134,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,320.87 : 328,979.63 = 89,489.15 : x
  2. Step 2: Convert to fraction form
    219,320.87/328,979.63 = 89,489.15/x
  3. Step 3: Cross multiply
    219,320.87x = 328,979.63 × 89,489.15
  4. Step 4: Simplify right side
    219,320.87x = 29,440,108,615.65
  5. Step 5: Solve for x
    x = 29,440,108,615.65/219,320.87
  6. Step 6: Final answer
    x = 134,233.05

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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.