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Finding the Fourth Proportional to 368,143.29, 507,830.16 and 220,930.50

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Solution

The fourth proportional to 368,143.29, 507,830.16 and 220,930.50 is: 304,759.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,143.29 : 507,830.16 = 220,930.50 : x
  2. Step 2: Convert to fraction form
    368,143.29/507,830.16 = 220,930.50/x
  3. Step 3: Cross multiply
    368,143.29x = 507,830.16 × 220,930.50
  4. Step 4: Simplify right side
    368,143.29x = 112,195,172,118.40
  5. Step 5: Solve for x
    x = 112,195,172,118.40/368,143.29
  6. Step 6: Final answer
    x = 304,759.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.