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Finding the Fourth Proportional to 279,088.61, 385,152.41 and 159,879.65

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Solution

The fourth proportional to 279,088.61, 385,152.41 and 159,879.65 is: 220,639.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,088.61 : 385,152.41 = 159,879.65 : x
  2. Step 2: Convert to fraction form
    279,088.61/385,152.41 = 159,879.65/x
  3. Step 3: Cross multiply
    279,088.61x = 385,152.41 × 159,879.65
  4. Step 4: Simplify right side
    279,088.61x = 61,578,030,981.39
  5. Step 5: Solve for x
    x = 61,578,030,981.39/279,088.61
  6. Step 6: Final answer
    x = 220,639.72

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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.