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Finding the Fourth Proportional to 368,910.72, 553,443.78 and 119,573.28

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Solution

The fourth proportional to 368,910.72, 553,443.78 and 119,573.28 is: 179,385.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,910.72 : 553,443.78 = 119,573.28 : x
  2. Step 2: Convert to fraction form
    368,910.72/553,443.78 = 119,573.28/x
  3. Step 3: Cross multiply
    368,910.72x = 553,443.78 × 119,573.28
  4. Step 4: Simplify right side
    368,910.72x = 66,177,088,070.20
  5. Step 5: Solve for x
    x = 66,177,088,070.20/368,910.72
  6. Step 6: Final answer
    x = 179,385.10

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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.