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Finding the Fourth Proportional to 279,398.40, 385,622.96 and 158,550.92

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Solution

The fourth proportional to 279,398.40, 385,622.96 and 158,550.92 is: 218,830.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,398.40 : 385,622.96 = 158,550.92 : x
  2. Step 2: Convert to fraction form
    279,398.40/385,622.96 = 158,550.92/x
  3. Step 3: Cross multiply
    279,398.40x = 385,622.96 × 158,550.92
  4. Step 4: Simplify right side
    279,398.40x = 61,140,875,081.12
  5. Step 5: Solve for x
    x = 61,140,875,081.12/279,398.40
  6. Step 6: Final answer
    x = 218,830.44

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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.