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Finding the Fourth Proportional to 319,842.98, 479,680.74 and 95,142.92

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Solution

The fourth proportional to 319,842.98, 479,680.74 and 95,142.92 is: 142,689.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,842.98 : 479,680.74 = 95,142.92 : x
  2. Step 2: Convert to fraction form
    319,842.98/479,680.74 = 95,142.92/x
  3. Step 3: Cross multiply
    319,842.98x = 479,680.74 × 95,142.92
  4. Step 4: Simplify right side
    319,842.98x = 45,638,226,271.36
  5. Step 5: Solve for x
    x = 45,638,226,271.36/319,842.98
  6. Step 6: Final answer
    x = 142,689.47

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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.