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Finding the Fourth Proportional to 530,829.59, 796,239.45 and 215,211.47

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Solution

The fourth proportional to 530,829.59, 796,239.45 and 215,211.47 is: 322,815.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,829.59 : 796,239.45 = 215,211.47 : x
  2. Step 2: Convert to fraction form
    530,829.59/796,239.45 = 215,211.47/x
  3. Step 3: Cross multiply
    530,829.59x = 796,239.45 × 215,211.47
  4. Step 4: Simplify right side
    530,829.59x = 171,359,858,525.29
  5. Step 5: Solve for x
    x = 171,359,858,525.29/530,829.59
  6. Step 6: Final answer
    x = 322,815.20

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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.