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Finding the Fourth Proportional to 368,731.50, 553,110.21 and 210,887.34

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Solution

The fourth proportional to 368,731.50, 553,110.21 and 210,887.34 is: 316,338.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,731.50 : 553,110.21 = 210,887.34 : x
  2. Step 2: Convert to fraction form
    368,731.50/553,110.21 = 210,887.34/x
  3. Step 3: Cross multiply
    368,731.50x = 553,110.21 × 210,887.34
  4. Step 4: Simplify right side
    368,731.50x = 116,643,940,913.74
  5. Step 5: Solve for x
    x = 116,643,940,913.74/368,731.50
  6. Step 6: Final answer
    x = 316,338.42

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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.