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Finding the Fourth Proportional to 291,779.55, 402,690.42 and 162,739.13

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Solution

The fourth proportional to 291,779.55, 402,690.42 and 162,739.13 is: 224,599.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,779.55 : 402,690.42 = 162,739.13 : x
  2. Step 2: Convert to fraction form
    291,779.55/402,690.42 = 162,739.13/x
  3. Step 3: Cross multiply
    291,779.55x = 402,690.42 × 162,739.13
  4. Step 4: Simplify right side
    291,779.55x = 65,533,486,596.68
  5. Step 5: Solve for x
    x = 65,533,486,596.68/291,779.55
  6. Step 6: Final answer
    x = 224,599.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.