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Finding the Fourth Proportional to 368,142.88, 508,034.64 and 209,166.88

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Solution

The fourth proportional to 368,142.88, 508,034.64 and 209,166.88 is: 288,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,142.88 : 508,034.64 = 209,166.88 : x
  2. Step 2: Convert to fraction form
    368,142.88/508,034.64 = 209,166.88/x
  3. Step 3: Cross multiply
    368,142.88x = 508,034.64 × 209,166.88
  4. Step 4: Simplify right side
    368,142.88x = 106,264,020,580.72
  5. Step 5: Solve for x
    x = 106,264,020,580.72/368,142.88
  6. Step 6: Final answer
    x = 288,648.85

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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.