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Finding the Fourth Proportional to 289,482.48, 399,515.28 and 166,979.52

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Solution

The fourth proportional to 289,482.48, 399,515.28 and 166,979.52 is: 230,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,482.48 : 399,515.28 = 166,979.52 : x
  2. Step 2: Convert to fraction form
    289,482.48/399,515.28 = 166,979.52/x
  3. Step 3: Cross multiply
    289,482.48x = 399,515.28 × 166,979.52
  4. Step 4: Simplify right side
    289,482.48x = 66,710,869,687.07
  5. Step 5: Solve for x
    x = 66,710,869,687.07/289,482.48
  6. Step 6: Final answer
    x = 230,448.73

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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.