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Finding the Fourth Proportional to 279,097.86, 385,165.20 and 159,888.90

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Solution

The fourth proportional to 279,097.86, 385,165.20 and 159,888.90 is: 220,652.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,097.86 : 385,165.20 = 159,888.90 : x
  2. Step 2: Convert to fraction form
    279,097.86/385,165.20 = 159,888.90/x
  3. Step 3: Cross multiply
    279,097.86x = 385,165.20 × 159,888.90
  4. Step 4: Simplify right side
    279,097.86x = 61,583,640,146.28
  5. Step 5: Solve for x
    x = 61,583,640,146.28/279,097.86
  6. Step 6: Final answer
    x = 220,652.50

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1.5x scale

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.