Home / 480,390.76-720,689.04-143,457.96

Finding the Fourth Proportional to 480,390.76, 720,689.04 and 143,457.96

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Solution

The fourth proportional to 480,390.76, 720,689.04 and 143,457.96 is: 215,217.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,390.76 : 720,689.04 = 143,457.96 : x
  2. Step 2: Convert to fraction form
    480,390.76/720,689.04 = 143,457.96/x
  3. Step 3: Cross multiply
    480,390.76x = 720,689.04 × 143,457.96
  4. Step 4: Simplify right side
    480,390.76x = 103,388,579,472.76
  5. Step 5: Solve for x
    x = 103,388,579,472.76/480,390.76
  6. Step 6: Final answer
    x = 215,217.67

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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.