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Finding the Fourth Proportional to 307,779.68, 424,743.10 and 193,063.16

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Solution

The fourth proportional to 307,779.68, 424,743.10 and 193,063.16 is: 266,431.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,779.68 : 424,743.10 = 193,063.16 : x
  2. Step 2: Convert to fraction form
    307,779.68/424,743.10 = 193,063.16/x
  3. Step 3: Cross multiply
    307,779.68x = 424,743.10 × 193,063.16
  4. Step 4: Simplify right side
    307,779.68x = 82,002,242,950.48
  5. Step 5: Solve for x
    x = 82,002,242,950.48/307,779.68
  6. Step 6: Final answer
    x = 266,431.64

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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.