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Finding the Fourth Proportional to 319,779.73, 479,509.14 and 106,472.51

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Solution

The fourth proportional to 319,779.73, 479,509.14 and 106,472.51 is: 159,655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,779.73 : 479,509.14 = 106,472.51 : x
  2. Step 2: Convert to fraction form
    319,779.73/479,509.14 = 106,472.51/x
  3. Step 3: Cross multiply
    319,779.73x = 479,509.14 × 106,472.51
  4. Step 4: Simplify right side
    319,779.73x = 51,054,541,703.74
  5. Step 5: Solve for x
    x = 51,054,541,703.74/319,779.73
  6. Step 6: Final answer
    x = 159,655.34

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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.