Home / 257,779.04-386,664.31-105,945.35

Finding the Fourth Proportional to 257,779.04, 386,664.31 and 105,945.35

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Solution

The fourth proportional to 257,779.04, 386,664.31 and 105,945.35 is: 158,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,779.04 : 386,664.31 = 105,945.35 : x
  2. Step 2: Convert to fraction form
    257,779.04/386,664.31 = 105,945.35/x
  3. Step 3: Cross multiply
    257,779.04x = 386,664.31 × 105,945.35
  4. Step 4: Simplify right side
    257,779.04x = 40,965,286,357.26
  5. Step 5: Solve for x
    x = 40,965,286,357.26/257,779.04
  6. Step 6: Final answer
    x = 158,916.28

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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.