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Finding the Fourth Proportional to 323,983.74, 485,920.22 and 87,271.06

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Solution

The fourth proportional to 323,983.74, 485,920.22 and 87,271.06 is: 130,891.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,983.74 : 485,920.22 = 87,271.06 : x
  2. Step 2: Convert to fraction form
    323,983.74/485,920.22 = 87,271.06/x
  3. Step 3: Cross multiply
    323,983.74x = 485,920.22 × 87,271.06
  4. Step 4: Simplify right side
    323,983.74x = 42,406,772,674.83
  5. Step 5: Solve for x
    x = 42,406,772,674.83/323,983.74
  6. Step 6: Final answer
    x = 130,891.67

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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.