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Finding the Fourth Proportional to 480,013.29, 720,019.70 and 143,045.34

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Solution

The fourth proportional to 480,013.29, 720,019.70 and 143,045.34 is: 214,567.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,013.29 : 720,019.70 = 143,045.34 : x
  2. Step 2: Convert to fraction form
    480,013.29/720,019.70 = 143,045.34/x
  3. Step 3: Cross multiply
    480,013.29x = 720,019.70 × 143,045.34
  4. Step 4: Simplify right side
    480,013.29x = 102,995,462,793.20
  5. Step 5: Solve for x
    x = 102,995,462,793.20/480,013.29
  6. Step 6: Final answer
    x = 214,567.94

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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.