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Finding the Fourth Proportional to 368,910.45, 553,398.01 and 112,800.80

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Solution

The fourth proportional to 368,910.45, 553,398.01 and 112,800.80 is: 169,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,910.45 : 553,398.01 = 112,800.80 : x
  2. Step 2: Convert to fraction form
    368,910.45/553,398.01 = 112,800.80/x
  3. Step 3: Cross multiply
    368,910.45x = 553,398.01 × 112,800.80
  4. Step 4: Simplify right side
    368,910.45x = 62,423,739,347.90
  5. Step 5: Solve for x
    x = 62,423,739,347.90/368,910.45
  6. Step 6: Final answer
    x = 169,211.09

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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.