Home / 355,091.60-531,341.40-261,779.60

Finding the Fourth Proportional to 355,091.60, 531,341.40 and 261,779.60

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Solution

The fourth proportional to 355,091.60, 531,341.40 and 261,779.60 is: 391,713.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,091.60 : 531,341.40 = 261,779.60 : x
  2. Step 2: Convert to fraction form
    355,091.60/531,341.40 = 261,779.60/x
  3. Step 3: Cross multiply
    355,091.60x = 531,341.40 × 261,779.60
  4. Step 4: Simplify right side
    355,091.60x = 139,094,339,155.44
  5. Step 5: Solve for x
    x = 139,094,339,155.44/355,091.60
  6. Step 6: Final answer
    x = 391,713.97

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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.