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Finding the Fourth Proportional to 319,399.66, 479,431.79 and 235,254.83

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Solution

The fourth proportional to 319,399.66, 479,431.79 and 235,254.83 is: 353,127.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,399.66 : 479,431.79 = 235,254.83 : x
  2. Step 2: Convert to fraction form
    319,399.66/479,431.79 = 235,254.83/x
  3. Step 3: Cross multiply
    319,399.66x = 479,431.79 × 235,254.83
  4. Step 4: Simplify right side
    319,399.66x = 112,788,643,076.77
  5. Step 5: Solve for x
    x = 112,788,643,076.77/319,399.66
  6. Step 6: Final answer
    x = 353,127.00

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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.