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Finding the Fourth Proportional to 480,633.84, 720,942.84 and 143,675.28

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Solution

The fourth proportional to 480,633.84, 720,942.84 and 143,675.28 is: 215,510.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,633.84 : 720,942.84 = 143,675.28 : x
  2. Step 2: Convert to fraction form
    480,633.84/720,942.84 = 143,675.28/x
  3. Step 3: Cross multiply
    480,633.84x = 720,942.84 × 143,675.28
  4. Step 4: Simplify right side
    480,633.84x = 103,581,664,401.00
  5. Step 5: Solve for x
    x = 103,581,664,401.00/480,633.84
  6. Step 6: Final answer
    x = 215,510.55

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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.