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Finding the Fourth Proportional to 370,743.89, 556,121.30 and 256,779.32

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Solution

The fourth proportional to 370,743.89, 556,121.30 and 256,779.32 is: 385,172.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,743.89 : 556,121.30 = 256,779.32 : x
  2. Step 2: Convert to fraction form
    370,743.89/556,121.30 = 256,779.32/x
  3. Step 3: Cross multiply
    370,743.89x = 556,121.30 × 256,779.32
  4. Step 4: Simplify right side
    370,743.89x = 142,800,445,187.01
  5. Step 5: Solve for x
    x = 142,800,445,187.01/370,743.89
  6. Step 6: Final answer
    x = 385,172.76

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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.