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Finding the Fourth Proportional to 319,851.15, 479,776.71 and 95,214.81

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Solution

The fourth proportional to 319,851.15, 479,776.71 and 95,214.81 is: 142,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,851.15 : 479,776.71 = 95,214.81 : x
  2. Step 2: Convert to fraction form
    319,851.15/479,776.71 = 95,214.81/x
  3. Step 3: Cross multiply
    319,851.15x = 479,776.71 × 95,214.81
  4. Step 4: Simplify right side
    319,851.15x = 45,681,848,285.08
  5. Step 5: Solve for x
    x = 45,681,848,285.08/319,851.15
  6. Step 6: Final answer
    x = 142,822.21

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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.